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Tomas Trojek (Czech Technical University in Prague)6/8/26, 9:00 AMOral Presentation
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Dr Michael Hajek (International Atomic Energy Agency)6/8/26, 9:30 AM
Operational quantities are designed for measuring external exposure to ionising radiation, providing conservative estimates of protection quantities. The International Commission on Radiation Units and Measurements (ICRU) Report 95, published jointly with the International Commission on Radiological Protection (ICRP) in 2020, proposes an alternative approach to the current definition of...
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Denisa Valentina Negreanu (Faculty of Physics, University of Bucharest, Magurele, Ilfov, Romania)6/8/26, 10:00 AM
The accurate and continuous monitoring of radon concentration in indoor spaces, such as educational and work environments, is crucial for public health and safety. This study, part of a PhD thesis on statistical and computational analyses of radon levels, addresses a critical challenge in the radiation protection community: the fragmentation of data and a lack of standardized collaboration...
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Abubakar Sadiq Usman (University of Maiduguri)6/8/26, 10:15 AM
Introduction: Computed tomography uses computed tomography dose index to estimate patient’s dose. However, it only accounts for scanner dose output using a reference phantom of unvarying size and content rather than patient`s morphology. The size specific dose estimate accounts for scanner dose output and patient size. There is no current documented diagnostic reference level established based...
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Anna Bianchi (INFN Laboratori Nazionali di Legnaro (LNL))6/8/26, 11:00 AM
In hadron therapy, accurate measurement of radiation quality remains a critical unmet need. While treatment planning systems (TPS) increasingly implement variable relative biological effectiveness (RBE) models for protons, for carbon ions, even if a variable RBE is applied, the clinical QA focuses almost exclusively on physical dose. Radiation quality, which strongly drives RBE and...
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Dr Sonia Hatsue Tatumi (Federal University of São Paulo)6/8/26, 11:00 AM
Optically Stimulated Luminescence (OSL) of quartz is widely applied for equivalent dose (De) determination for sedimentary geochronology. Blue-light stimulated OSL (BOSL) is a widely accepted technique and dominated by the fast component, which is commonly attributed to electron release from a trap located approximately 2.8–2.9 eV below the conduction band. Although blue photons (~2.6 eV) are...
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Paulinah Oyindamola Fasanmi (Department of Physics, Faculty of Science, University of Johannesburg, Doornfontein, South Africa)6/8/26, 11:15 AM
Radon is an odourless, colourless and tasteless noble gas which is highly radioactive in nature. It is of great concern because it poses a huge risk to man when inhaled and ingested. This study aims to quantify the concentration of Rn-222 in groundwater samples obtained from sources around artisanal gold and gemstone mining communities located in Southwest Nigeria and assess the lifetime...
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Evan Poket (HE2B ISIB (Institut Supérieur Industriel de Bruxelles) - Belgium)6/8/26, 11:15 AM
Nanoparticle enhanced radiotherapy under X-ray irradiation has been widely investigated as a promising strategy to locally modify energy deposition at the micrometric and nanometric scales. This method aims to optimize the patient’s cancer treatment by promoting the production of secondary particles in the vicinity of the nanoparticles and increasing local energy deposition while preserving...
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Yinka Ajiboye (Department of Mathematical and Physical Sciences, Afe Babalola University, Nigeria)6/8/26, 11:30 AM
Aquaculture environments can serve as pathways for naturally occurring radionuclides to enter the human food chain through fish consumption and water use. This study quantified the activity concentrations of polonium-210 (Po-210) in catfish tissues and radon-222 (Rn-222) in pond water from selected aquaculture habitats in Ekiti State, Nigeria. A longitudinal sampling design was adopted, with...
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Jyun-Wei Jheng (Department of Medical Imaging and Radiological Sciences, Chang Gung University, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 333323, Taiwan)6/8/26, 11:30 AM
The Thermoluminescence Dosimeter TLD-400 (CaF₂:Mn) exhibits high sensitivity to ionizing radiation and is widely used in radiotherapy and space dosimetry. A key characteristic of TLD-400 is its beam quality–dependent relative efficiency (η(λ,γ)), where thermoluminescence output varies among radiation types even at identical absorbed doses.
In this work, relative efficiencies were measured...
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Aneta Smejkalová (ADVACAM)6/8/26, 11:45 AM
Dosimeters are typically calibrated in well-defined reference radiation fields; however, real-world radiation environments often deviate significantly from these conditions in terms of spectral composition, particle type, and angular distribution. Such deviations may lead to substantial underestimation or overestimation of the dose. To ensure reliable dose assessment, it is therefore essential...
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Anna Selva (INFN Laboratori Nazionali di Legnaro)6/8/26, 11:45 AM
Boron Neutron Capture Therapy (BNCT) is a hadron therapy strategy based on low-energy neutron irradiation of a tumor previously loaded with boron-10 atoms. The resulting radiation field is composed of several particles with varying biological effectiveness. Microdosimetry is a valuable tool to monitor this complex field, allowing to distinguish different dose components and providing a...
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Maria Luz Olaguibe (Department of Oncology, Laboratory of Experimental Radiotherapy, Leuven, Belgium. Belgian Nuclear Research Center (SCK CEN), Mol, Belgium)6/8/26, 12:00 PM
Background
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Dose-weighted linear energy transfer (LETd) is widely used in relative biological effectiveness (RBE) modeling; however, as an averaged quantity, it does not fully describe microscopic energy deposition patterns responsible for biological damage. Microdosimetry overcomes this limitation by describing energy deposition through probability distributions, with dose-weighted lineal... -
Iveta Smetanová (Ústav vied o Zemi SAV, v. v. i., Bratislava)6/8/26, 12:00 PM
Radon research in the Malá Stanišovská Cave (Low Tatras Mts., Slovakia) started in December 2024 and is planned for two years. Five monitoring stations were established along the tourist route, radon monitoring is performed using CR-39 track detectors, changed in one month and three-months intervals. The results obtained during the year 2025 showed the lowest radon levels at the cave entrance,...
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Ramesh Rijal (School of Physics, University of Melbourne)6/8/26, 2:00 PM
We report the experimental discovery of Hidden Satellites within the Mn Kα₁,₂ emission lines, with statistical significance reaching over 20 σ per data point, enabled by our in-house eXtended-Range High-Energy-Resolution Fluorescence Detection (XR-HERFD) technique at the I20-Scanning beamline (Diamond Light Source). Our new development of a binary data splicing methodology, combined with...
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AAMIR FAROOQ (Chang Gung University (CGU), Taiwan), Prof. Tsi-Chian Chao (Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan, Taiwan)6/8/26, 2:00 PM
Radiation-induced single-event upsets (SEUs) in advanced nanoscale memories present a major reliability challenge for CubeSat missions operating in proton-rich space environments. This work investigates SEUs in a realistic 14 nm FinFET (FF) memory array using Geant4 simulations under 1–500 MeV proton irradiation. A 2D array of 83 × 53 FF devices was modeled within a 7 × 7 µm² silicon cell...
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Cristiana Magalhães Correia Rodrigues (FCUL/LIP/C2TN), Dr João Gentil Saraiva (LIP)6/8/26, 2:15 PM
Understanding the radiation effects at the microscale is essential for advancing cancer treatment strategies such as hadron therapy, which requires new developments in dosimetry to accurately map the cell-level energy distribution and assess the contribution from secondary particles. Herein, luminescence-based dosimetry has gained increasing attention. Thermoluminescence (TL) and optically...
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Radek Novotný (CTU FNSPE)6/8/26, 2:15 PM
We present the results from the space mission VZLUSAT-2, where our novel space dosimetry system based on the SpacePix2 chip was successfully tested in orbit. The detector system operated continuously over an extended period, demonstrating stable performance in low Earth orbit and providing valuable data on the space radiation environment. The system’s ability to distinguish between different...
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42. Implementation of a Real-time Pulse Pileup Correction Algorithm for High Rate Gamma SpectroscopyKostandinos Gianicos (McMaster University)6/8/26, 2:30 PM
Gamma-ray spectroscopy of radiation fields is constrained by pulse pileup. Conventional acquisition systems rely on pileup rejection (PUR), which maintains energy resolution while introducing significant dead-time. This is unacceptable when measurement times are limited and statistical accuracy is crucial. To enable spectroscopy of high activity radiation fields, we developed a pulse pileup...
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Lucie Švihrová (Nuclear Physics Institute of the Czech Academy of Sciences, Husinec-Rez, Czechia; Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Czechia)6/8/26, 2:30 PM
Cosmic radiation at commercial flight altitudes represents a mixed high-energy field whose spectral composition and particle balance vary with geomagnetic latitude, altitude, and solar modulation. These variations influence detector response and introduce systematic uncertainties into routinely reported operational quantities such as ambient dose equivalent 𝐻∗(10).
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This study examines how... -
Pavel Novotný (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)6/8/26, 2:45 PM
X-ray fluorescence (XRF) spectroscopy is a well-established and versatile analytical tool for determining elemental composition. However, conventional XRF techniques provide only depth-averaged information, which limits their suitability for stratified samples where depth-resolved spectral data are crucial.
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Confocal micro-XRF analysis overcomes this limitation by employing a geometric... -
Dr Geoffrey Cousland (School of Physics, The University of Melbourne)6/8/26, 2:45 PMDosimetry and radiation protection in industryOral Presentation
X-ray Absorption Spectroscopy (XAS) measurements for Nickel-doped borate glass, xLi2O.(1 − x − y)B2O3 + yNiO, where x = 0.33 and y = 0.05, have been conducted at The Photon Factory, Tsukuba, Japan. The X-ray absorption near edge structure (XANES) at the energy-region just above the nickel K-edge (8333eV) includes a superimposed X-ray absorption fine structure (XAFS). XAFS measurements have the...
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Pia Kahle (Dresden University of Technology)6/8/26, 3:00 PM
In the framework of the EBENE project TU Dresden aims to verify simulations of nuclear dismantling situations. Therefore the activation of concrete and steel samples is experimentally studied. Concrete samples are activated in a neutron reference field with a fluence rate of 2·10⁵ cm⁻² s⁻¹. Depending on the composition and mass of the sample, activities of only a few Becquerel are achieved for...
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Alexander Romanyukha (Uniformed University of the Health Sciences, Armed Forces Radiobiology Research Institute)6/8/26, 3:00 PMDosimetry and radiation protection in industryOral Presentation
The United States Transuranium and Uranium Registries (USTUR) was established in 1968 by the U.S. Atomic Energy Commission. The Registries collect post-mortem tissue and organ samples, including teeth, from occupationally exposed individuals who voluntarily donate their bodies. By maintaining comprehensive dosimetry records and bioassay data, the USTUR serves as a unique resource for verifying...
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Saqr Alshogeathri (King Abdulaziz City for Science and Technology)6/8/26, 3:15 PM
This work proposes a novel indirect detection strategy in which ionizing radiation (gamma and alpha) is converted into infrared (IR) or near-infrared (NIR) photons using secondary radio-luminescent materials that are optically coupled to existing commercial IR-triggered dosimetry systems. Instead of modifying certified detection devices, the concept introduces an external radiation-to-IR...
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Dr Izdihar Kamal (Department of Physics Universiti Putra Malaysia)6/8/26, 3:15 PMDosimetry and radiation protection in industryOral Presentation
The demand for lightweight, flexible, and lead-free radiation shielding materials in diagnostic imaging continues to increase due to concerns regarding cumulative radiation exposure and toxicity of conventional shields. In this study, hybrid iron–bismuth oxide (Fe–Bi₂O₃) reinforced polydimethylsiloxane (PDMS) composites were developed and evaluated for their photon attenuation performance and...
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Pablo Martorell Doménech (Universitat Politècnica de València)6/8/26, 4:00 PMDosimetry and radiation protection in industryOral Presentation
The valorisation of refractory waste containing zirconium compounds is of particular interest due to their properties and high cost. This waste can be recycled not only in the refractory materials industry but also, increasingly, in the ceramics industry. However, this refractory waste is NORM due to the presence of impurities from radioactive elements in the natural decay chains of U-238 and...
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Mr Pavol Pajerský (Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering; VUJE, a.s.)6/8/26, 4:00 PM
ABSTRACT
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As part of Phase V of the decommissioning of the A1 NPP in Jaslovské Bohunice, remedial actions are planned in response to radioactive contamination of the Manivier discharge canal banks, if it will be shown as necessary. The Manivier open channel was used as a discharge pathway for authorized and emergency liquid discharges from the A1 and V1 NPPs.
Nowadays, the riverbanks are... -
Cristina Trull-Hernandis (Universitat Politècnica de València)6/8/26, 4:15 PM
The fertilizer industry employs raw materials that naturally contain radionuclides. The processing of these materials during fertilizers production leads to the generation of by-products in which the initial radionuclide content is enhanced. One of the management practices implemented over the years has been the storage of this phosphate waste in open-air piles and ponds. Among the...
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Dr Maia Avtandilashvili (United States Transuranium and Uranium Registries, Washington State University)6/8/26, 4:15 PMDosimetry and radiation protection in industryOral Presentation
The ICRP biokinetic and dosimetric models do not explicitly incorporate dosimetric uncertainty. Time‑dependent radionuclide activity retained in organs is directly related to radiation dose; hence, uncertainties in biokinetic model predictions of organ activities can be used as surrogates for uncertainties in dose. Bayesian methods, which provide full posterior dose distributions rather than...
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NOR AZURA MUHAMMAD (UNIVERSITY MALAYA)6/8/26, 4:30 PM
The widespread adoption of C-arm fluoroscopy has significantly optimized minimally invasive spinal and orthopaedic surgery by reducing operative morbidity, its frequent intraoperative application necessitates rigorous monitoring and safety protocols to mitigate the cumulative health risks posed by scatter radiation exposure to surgical personnel. Therefore, this study aims to evaluate...
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Kamila Johnová (SÚRO, v.v.i.)6/8/26, 4:30 PM
Radiation protection in underground workplaces, such as minning tunnels, requires systematic monitoring of occupational exposure. Workers are exposed not only to external gamma radiation originating from surrounding rock, but also to radon and its short-lived progeny present in the air. At established workplaces, monitoring strategies typically combine personal dosimetry with ambient...
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Miroslav Voytchev (ASNR)6/8/26, 4:45 PM
This work presents recent updates to the international standard IEC 62387 on Dosimetry systems with integrating passive detectors for individual, workplace and environmental monitoring of photon and beta radiation, developed by the International Electrotechnical Commission (IEC) Subcommittee 45B “Radiation Protection Instrumentation”. The second edition was published in 2020, followed by the...
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Luka Pavelic (Institute for Medical Research and Occupational Health)6/8/26, 4:45 PM
This work showcases the development and performance of a novel IoT-based dosimetry system for real-time measurement of ambient dose equivalent H*(10) and personal dose equivalent Hp(10), developed within the ODIS project and characterized under EBDIZ project.
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The detector system is based on a scintillation crystal with an energy response optimized (compensated) through tailored adjustment of... -
Inmaculada Sierra Bercedo (CIEMAT)6/8/26, 5:00 PM
Accurate assessment of committed effective dose following occupational intake of radionuclides requires updated biokinetic models, robust statistical inference, and comprehensive uncertainty management. Although the ICRP Occupational Intakes of Radionuclides (OIR) series provides state-of-the-art systemic models, retention and excretion functions, and dose coefficients, their operational...
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Štefan Čerba (Slovak University of Technology in Bratislava, Faculty of Electrical Engineering and Information Technology, Institute of Nuclear and Physical Engineering)6/8/26, 5:00 PM
The methodology of radiation surveillance has been transitioning from a manual, high-risk endeavor to a sophisticated, data-driven discipline. The current trend is to move beyond static, ground-based measurements, carried out by human personnel, toward a dynamic, autonomous Internet of Things (IoT) framework. This shift represents a fundamental evolution of the Unmanned Aerial Vehicles (UAV)...
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Mr Noemi Aguiar Silva (Federal University of São Paulo)6/8/26, 5:15 PM
This study investigates the thermoluminescence (TL) response of LiMgPO₄:Al dosimeters under different radiation fields. A comparative analysis was performed using two radiation sources with distinct linear energy transfer (LET) characteristics: a ⁹⁰Sr/⁹⁰Y beta source (low LET) and a ²²⁶Ra source emitting α, β, and γ radiation (mixed field with high-LET contribution). For ⁹⁰Sr/⁹⁰Y irradiations,...
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Prof. Abdelmoneim Sulieman, Noor Bin Aydan6/8/26, 5:30 PM
Cardiology staff, particularly those involved in fluoroscopically guided procedures, are exposed to occupational ionizing radiation. Long-term dose monitoring is essential to ensure compliance with radiation safety standards and to support optimization strategies. This study aimed to evaluate cumulative occupational radiation doses among cardiology department staff over a five-year period...
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Dr Ying-Lan Liao (National Atomic Research Institute)6/8/26, 5:45 PM
The National Radiation Standard Laboratory (NRSL/INER) established a primary standard for the reference air kerma rate (RAKR) of HDR Ir-192 brachytherapy sources based on dual graphite-walled spherical cavity ionization chambers combined with a dedicated dual-collimator geometry. The original realization achieved an expanded uncertainty of 0.92% (k = 2) and demonstrated consistency in the...
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Patricia Mayo (ISIRYM,Universitat Politècnica de València)6/8/26, 5:47 PM
Introduction:
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Understanding how parameter variability influences occupational dose is essential for radiological protection during nuclear decommissioning. This study performs a detailed sensitivity and uncertainty analysis of the effective dose received by an Industrial‑Worker scenario at a decommissioned PWR facility, using RESRAD‑ONSITE as the computational dosimetry... -
JOSÉ NERES DE ALMEIDA JUNIOR (IPEN/CNEN - USP/SP), Maria da Penha Potiens (Instituto de Pesquisas Energéticas e Nucleares)6/8/26, 5:49 PM
Ensuring international metrological traceability for Air Kerma-Area Product (PKA) measurements is crucial for modern clinical dosimetry. Traditional calibration methods have limitations in geometry, uncertainty, and clinical deployment. This study proposes a hybrid methodology to establish a robust traceability chain for PKA meters. To develop and validate a computational protocol for the PKA...
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GABRIEL NASCIMENTO (Instituto de Pesquisas Energéticas e Nucleares)6/8/26, 5:51 PM
In recent years, eye lens dosimetry has been the subject of numerous studies, many motivated by the changes implemented by the ICRP in Publication 108. Front-line professionals in interventional radiology, particularly radiologists, are exposed to high doses to the eye lens. This study evaluates the performance of a new dosimeter holder for the quantity Hp(3), manufactured via 3D printing...
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bruno chaves dos santos6/8/26, 5:53 PM
This work aims to present a methodological and modeled way to extract, treat and apply physics in CT dosimetry studies to obtain relevant and statistical parameters such as absorbed dose, kvp and tube current. Anonymized Computed Tomography studies hosted in the various websites of medicine and nuclear medicine was used as a primary tool in order to employ the physics of attenuation of primary...
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Jaroslav Klusoň (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague), Václav Štěpán (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)6/8/26, 5:55 PM
Airborne gamma spectrometry measures desired radiation quantities usually from relatively long distances, often from sources spread over large areas. Values measured over one data acquisition period (scan) represent the average over a specific area and, in general, may not agree with the value at the corresponding coordinates on the surface. This “spatial resolution” depends on the height and...
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Cristina Trull-Hernandis (Universitat Politècnica de València)6/8/26, 5:57 PM
The radiological characterization of building materials is essential to evaluate their potential contribution to indoor radon levels and to better understand the mechanisms governing radon release from building products. In this context, both the intrinsic radioactive content of raw materials and their final physical state may influence radon exhalation behavior.
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This work presents an... -
Dr Ying-Lan Liao (National Atomic Research Institute)6/8/26, 5:59 PM
This study optimizes the performance of a stainless-steel, 2π windowless large-area multi-wire proportional counter at the National Ionizing Radiation Standard Laboratory (NRSL) in Taiwan. Featuring a 100 mm× 150 mm effective area and a NIM-standard analog processing chain, the system utilizes P-10 gas for particle detection via ionization and charge multiplication. By employing absolute...
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Dr Aleš Jančář (BERTIN VF NUCLEAR)6/8/26, 6:01 PM
The newly developed nuclear spectrometric system incorporates a digital multichannel analyzer, suitable radiation detectors, and advanced algorithms for the characterization of unknown fast neutron fields. Accurate knowledge of these fields is essential for the objective assessment of the metrological performance of neutron devices during calibration.
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The hardware platform of the system is... -
Ademar José Potiens Júnior, Maria da Penha Potiens (Instituto de Pesquisas Energéticas e Nucleares), Raphael Elias Diniz6/8/26, 6:03 PM
The calibration of surface contamination monitors requires the use of Large Area Reference Sources (LAAS) whose emission properties must strictly comply with the ISO 8769 standard. A critical requirement of this standard is the uniformity of the surface emission rate, which must be periodically verified to ensure measurement traceability. Currently, the lack of dedicated national...
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Dr Ademar Potiens Junior (Instituto de Pesquisas Energéticas e Nucleares (IPEN)), Mr Fabio Bessa Villafranca (Instituto de Pesquisas Energéticas e Nucleares (IPEN)/ Universidade de São Paulo (USP))6/8/26, 6:05 PM
The Waste Management Department (SEGRR) in the Nuclear and Energy Research Institute (IPEN), São Paulo, Brazil, is responsible for managing radioactive waste produced in its facilities and also in the southeastern region of Brazil. Among those wastes are the compactable solid waste, stored in 200-liter drums at IPEN interim storage site. It is estimated that the content of 256 of those drums...
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Hana Průšová (CVUT, FJFI, KDAIZ)6/8/26, 6:07 PM
The full-field X-ray fluorescence (XRF) imaging offers a possibility to create high-resolution 2D elemental maps of a measured sample at once without the need for the sequential scanning of the sample surface with a narrow X-ray beam.
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Our setup for full-field XRF imaging utilises low-power X-ray tubes and Color X-ray Camera (CXC) spectrometric pixel detector with a capillary collimator. This... -
Václav Štěpán (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)6/8/26, 6:09 PM
Important part of radiological emergency response training is radiological assessment of the site and delineation of cold/warm/hot zones. Ideally, the training would be a hands-on practice with real radiation sources with type, activity and spatial distribution matching the modelled emergency situation. However, such training is constrained by safety, regulatory and logistical limitations....
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Michael Discher (Paris Lodron University Salzburg)6/8/26, 6:11 PM
Retrospective dosimetry requires readily available materials with reliable luminescent responses to ionizing radiation when personal dosimeters are absent. Preliminary studies (Łepkowska and Jung, 2024, 2022; Fattibene et al., 2022) have highlighted the potential of mobile phone glass for retrospective dosimetry. However, a systematic investigation is still needed to establish a comprehensive...
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Andrej Gvozdic (Czech Technical University in Prague)6/8/26, 6:13 PM
Weld characterization requires both compositional and structural information, yet conventional X-ray diffraction (XRD) and X-ray fluorescence (XRF) are typically performed sequentially, increasing acquisition time and complicating spatial correlation. In this work, we demonstrate spatially resolved, simultaneous XRD and XRF analysis of welded metal plates using a pnCCD-based Color X-ray Camera...
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Prof. Fang-Yuh Hsu (National Tsing Hua University)6/8/26, 6:15 PM
Handheld X-ray Fluorescence (XRF) analyzers are widely utilized in metal recycling, environmental soil monitoring, and hazardous substance screening due to their advantages in non-destructive, real-time qualitative and quantitative analysis. However, the ionizing radiation generated by the internal X-ray tube during operation poses potential health risks to operators. This study investigates...
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VIVIANE ASFORA (UFPE)6/8/26, 6:17 PM
The Sterile Insect Technique (SIT) is based on the release of irradiated males to suppress insect populations through induced sterility. The success of this approach depends on the accurate delivery and verification of absorbed dose, ensuring effective sterilization while preserving insect quality and mating competitiveness. In this context, reliable dosimetry systems are essential for...
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Michael Hajek (International Atomic Energy Agency)6/8/26, 6:19 PM
The quality of individual monitoring services depends on the characteristics of the type-tested dosimetry system, personnel competence, and the robustness of calibration procedures and quality assurance programmes. While type testing establishes system performance under varied conditions, routine performance testing ensures sustained accuracy and reliability under representative workplace...
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Dr Lenin E. Cevallos-Robalino (Carrera de Ingeniería en Mecatrónica, Grupo de Investigación en Micro-Nanotecnología y Energía Nuclear (NANOTECH), Universidad Politécnica Salesiana (UPS), C. Robles 107 Chambers, 090108, Guayas, Guayaquil, Ecuador)6/8/26, 6:21 PM
A comprehensive spectral and dosimetric assessment of a thermoluminescent neutron personal dosimetry system was performed using Monte Carlo simulations to reproduce reference irradiation conditions at the Neutron Standards Laboratory (LPN-CIEMAT, Spain). The system, composed of paired TLD-600 and TLD-700 detectors, was positioned on the surface of an ISO water phantom and exposed to a...
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Jana Hudzietzová (Faculty of Biomedical Engineering, Czech Technical University in Prague, CZECH REPUBLIC)6/8/26, 6:23 PM
Introduction: In recent years, the number of workplaces providing lutetium therapy has increased, which is one of the modern therapeutic procedures of nuclear medicine – theragnostic, combining not only therapy with radiopharmaceuticals but also diagnostics. This therapy can be administered in the inpatient part of the workplace as well as in an outpatient manner. In the outpatient method of...
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Eleni Papadomarkaki (GREEK ATOMIC ENERGY COMMISSION (EEAE))6/8/26, 6:25 PM
This study presents a bibliometric analysis of research trends in eye lens dosimetry for occupational exposure. A search in the Scopus database for the last two decades identified 353 articles that met our selection criteria. Bibliometric networks and trends were examined using VOSviewer to explore publication dynamics, geographic distribution, institutional collaboration, and thematic...
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Dr Ying-Lan Liao (National Atomic Research Institute)6/8/26, 6:27 PM
Background and Objective: Following the ICRP recommendation to lower the occupational eye lens equivalent dose limit to 20 mSv/year, accurate Hp(3) monitoring has become a critical priority. our study evaluates the performance of commercial eye lens dosimeters by comparing national proficiency testing results under two distinct international standards.
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Materials and Methods: Ten dosimetry... -
Jozef Sabol (Police Academy of the Czech Republic in Prague)6/8/26, 6:29 PM
At present, there are too many quantities used in radiation protection, which are causing some problems and inconsistencies in the presentation and interpretation of results from radiation detection and monitoring. Furthermore, the definition of these quantities is rather complicated and difficult to understand, especially for those entering the field. Another problem is the availability of...
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M. Hiller (RadCon GmbH, Augsburg, Germany)6/8/26, 6:31 PM
Lithium fluoride (LiF) thermoluminescent dosemeters (TLD) are commonly used for personnel monitoring. When the TL material is enriched in $^6$Li they are sensitive to neutrons via the $^6$Li(n,$\alpha$)$^3$H reaction which has a strong energy dependence. These dosemeters are referred to as albedo dosemeters since they rely on neutrons that are backscattered from the body (or phantom) and these...
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Mr Jozef Sabol (Police Academy of the CR in Prague, Czech Republic)6/8/26, 6:33 PM
Introduction: Communication of radiation risk arising from the use of radiation and nuclear technologies for various purposes is an important part of protecting all persons who are, or may be, affected by radiation exposure during the application of these technologies under normal conditions and in emergency situations, including terrorist attacks. This danger may include not only the members...
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Ademar José Potiens Júnior6/8/26, 6:35 PM
In the nuclear energy sector, adherence to safety standards is paramount for operational efficiency and radiological protection. However, the exponential growth of technical documents issued by the International Atomic Energy Agency (IAEA) and the Brazilian National Commission for Nuclear Energy (CNEN) has made efficient information retrieval a critical challenge. Traditional keyword-based...
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Mr Václav Procházka (KDAIZ, FJFI ČVUT v Praze)6/8/26, 6:37 PM
X-Ray Fluorescence with sufficient spatial resolution is an efficient non-destructive tool for mapping the distribution of several elements in dendrochronological samples as a probe into uptake of these elements during the tree growth. Here we present an example of secondary penetration of metals, arsenic and sulfur into wood from archaeological findings south of the town Havlíčkův Brod. Fir...
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Aljawhara Almuqrin (Princess Nourah bint Abdulrahman University)6/8/26, 6:39 PM
Tellurite-based glasses are promising candidates for ionizing radiation shielding due to their high density, good transparency, and compositional flexibility. In this work, a series of TeO₂–B₂O₃–PbO–M glasses (where M = SrO, BaO, MgO, and CaO) were successfully fabricated using the conventional melt-quenching technique, and the influence of the modifier oxide (M) on the gamma-ray shielding...
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Ms Celia Tendero (Universitat Politècnica de València), Ms Mónica Chillarón (Universitat Politècnica de València), Mr Vicente Vidal (Universitat Politècnica de València)6/8/26, 6:41 PM
Radiographic imaging is an essential diagnostic tool in medicine, but repeat exposure to radiation does not come without hazards. The acquisition of good quality images depends on the use of high energy on the X-Ray tube. Lowering that energy reduces the dose administered, however reducing X-Ray tube current and voltage can introduce Poisson noise in the images and the image exposure. With the...
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Dr Rong-Jiun Sheu (National Tsing Hua University)6/8/26, 6:43 PM
In digital triple-to-double coincidence ratio (TDCR) measurement systems, optical integrity and gain stability of photomultiplier tubes (PMTs) are essential to ensure reliable efficiency modelling and reproducibility of the T/D ratio. A modular portable digital TDCR system incorporating an integrated mechanical shutter and pneumatically actuated sealing mechanism was developed to enable mobile...
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Carles Domingo (Universitat Autonoma de Barcelona)6/8/26, 6:45 PM
Neutron personal dosimetry is essential for monitoring workers exposed to neutron radiation, from those in the nuclear industry to surgeons and other healthcare professionals. In addition, the growth of protons and heavy ions therapy techniques, where neutrons are originated as parasitic radiation without therapeutic effect, makes necessary to measure neutron doses in patients. Consequently,...
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Ildo Domingos Ufala (Universidade de São Paulo), Maria da Penha Albuquerque Potiens (Universidade de São Paulo/Institute for Energy and Nuclear Research)6/8/26, 6:47 PM
Radiological protection is a fundamental component of safety in the use of ionizing radiation, ensuring the protection of human health and the environment. The continuous expansion of radiation applications in medicine, industry, agriculture, and energy demands robust regulatory systems aligned with international recommendations, particularly those issued by the International Commission on...
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Beatriz Garcia Fayos (Universitat Politècnica de València)6/8/26, 6:49 PM
Introduction
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Radon is a naturally occurring radioactive gas generated by the decay of uranium present in soils and rocks. It can infiltrate buildings through cracks and pores in construction materials or exhale from the materials themselves, posing a significant health risk and being one of the main causes of lung cancer. This study investigates wall coverings as a strategy to reduce... -
Beatriz Garcia Fayos (Universitat Politècnica de València), GUMERSINDO JESUS VERDU MARTIN (Universitat Politecnica de Valencia)6/8/26, 6:51 PM
Introduction
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Prolonged exposure to indoor radon gas represents a public health problem, driving research on mitigation strategies and the modification of building materials to achieve low gas permeability towards indoor spaces. This study evaluates the radon shielding effectiveness of different common building materials used as interior wall claddings, both in their raw form and after... -
Hugo Schelin (Federal University of Technology - Parana)6/9/26, 9:00 AM
Pediatric interventional cardiology procedures are widely performed for both the diagnosis and treatment of congenital heart diseases. Although these procedures present lower complication rates compared with conventional surgery, they may involve significant exposure to ionizing radiation. In this context, radiation protection is particularly relevant, as children are more radiosensitive and...
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Mustapha Chaoui (University Mohamed V in Rabat (MA))6/9/26, 9:30 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Abstract
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Background: FLASH radiotherapy, characterized by ultra-high dose rates (UHDR), has emerged as a promising modality for tumor control with reduced normal tissue toxicity. Dosimetry under UHDR conditions remains challenging due to detector saturation effects, strong dose-rate dependence, and the limited suitability of conventional dosimetric systems. Silicon carbide (SiC) detectors... -
Jian-Kai Hong (Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan)6/9/26, 9:45 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Purpose:
This study compared dose differences between FilmQA Pro and ImageJ for film dosimetry, using a high‑cost professional flatbed scanner and a low‑cost consumer multifunction printer scanner in a clinically relevant breast phantom setup.
Methods:
Following a clinical breast treatment plan, EBT4 was irradiated with a 6 MV photon beam and placed at a depth of...
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Prof. David Andrew Bradley (University of Surrey, England)6/9/26, 10:00 AMDosimetry and radiation protection in medicine and biologyOral Presentation
This exploratory study investigates the feasibility of thin polytetrafluoroethylene (PTFE) films as passive radiation detectors using a multi-filter badge configuration under mammography X-ray irradiation. PTFE sheets were mounted inside an optically stimulated luminescence badge behind copper, aluminium and plastic filters and irradiated with a 28 kVp beam at doses between 2 and 10 mGy....
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Ahmad abbas6/9/26, 10:15 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Purpose: To evaluate dose distribution accuracy in pancreatic stereotactic ablative radiotherapy (SABR) in patients with self-expanding metal biliary stents using Monte Carlo (MC) simulation, incorporating correct stent materials and an improved contouring technique to account for CT artefacts.
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Methods: Two anonymised clinical cases with Nitinol biliary stents were analysed. VMAT treatment... -
Kah Yeen Lim (National Tsing Hua University)6/9/26, 11:00 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Boron neutron capture therapy (BNCT) is a targeted radiotherapy that utilizes the selective accumulation of boron-10 within tumors followed by epithermal neutron irradiation. Since BNCT dose components are highly sensitive to neutron spatial distribution and energy spectra, rigorous validation of treatment planning systems (TPS) is essential—especially in the presence of clinical...
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Davide Bortot (Politecnico di Milano)6/9/26, 11:00 AM
Proton therapy treatment planning traditionally assumes a constant Relative Biological Effectiveness (RBE) of 1.1. However, growing evidence shows that proton RBE varies with depth, generally increasing toward the distal region of the Spread-Out Bragg Peak (SOBP). This variation is linked to changes in microscopic energy deposition as protons slow down in tissue, potentially leading to...
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Mrs Ana Laura Burin (IPEN/USP)6/9/26, 11:15 AMDosimetry and radiation protection in medicine and biologyOral Presentation
The dosimetry of beta-emitting sources presents significant challenges at short distances due to steep dose gradients. Phosphorus-32 (³²P) sources have been proposed as promising alternatives in brachytherapy, particularly for the palliative treatment of spinal tumors, since the short range of beta particles enables high dose deposition in the target while sparing the spinal cord. The aim of...
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Davide Mazzucconi (Politecnico di Milano)6/9/26, 11:15 AM
Radiation therapy with carbon ions is characterized by high biological effectiveness due to the high Linear Energy Transfer (LET) of both primary ions and the secondary fragments produced along the beam path. In clinical practice, RBE calculations are typically based on radiobiological models which links microscopic energy deposition patterns to cellular response. Microdosimetry provides...
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Omar Noor (King Faisal Specialist Hospital and Research Centre)6/9/26, 11:30 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Background and objective: CT is a major contributor to the collective medical radiation dose, highlighting the continuous need for optimization particularly for higher-dose examinations such as CT perfusion (CTP). This study aimed to estimate the effective (E, mSv) and eye lens dose (mGy), and to assess imaging protocol (IP) performance.Materials and methods: CT protocols for 1,020...
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Dr Pavel Kundrát (Department of Radiation Dosimetry, Nuclear Physics Institute, Czech Academy of Sciences)6/9/26, 11:30 AM
Nanodosimetry focuses on measuring and simulating ionizations in low-pressure gas detectors that mimic tiny volumes and may serve as proxies for cellular DNA constituents and induction of clustered DNA damage. Nanodosimetry provides unprecedented measurements of physical parameters that govern biological effects of ionizing radiation. However, radiation-induced effects leading to biological...
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Chia-Wei Huang (Department of Dosimetry and Application of Ionization Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague; Department of Radiation Dosimetry, Nuclear Physics Institute, Czech Academy of Sciences)6/9/26, 11:45 AM
Biological effects of ionizing radiation arise from a sequence of stochastic processes, including particle interactions, radical chemistry, DNA damage induction, cellular repair, and tissue-level responses. Monte Carlo track structure simulations capture many of these early physical and chemical stages and enable mechanistic investigation of radiation quality effects. Despite this inherent...
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Dr Camila Ramos Silva (Energy and Nuclear Research Institute)6/9/26, 11:45 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Breast cancer (BC) radiotherapy (RT) relies on accurate dose delivery to the target volume while minimizing exposure to surrounding healthy tissues. In preclinical research, however, access to dedicated small-animal irradiation platforms remains limited due to high costs, particularly in developing countries. This work presents the development and dosimetric validation of a low-cost lead...
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68. LINEAR ACCELERATOR QUALITY ASSURANCE THROUGH A NOVEL ALANINE-BASED POSTAL DOSIMETRY AUDIT SYSTEMARICIA CRUZ (FEDERAL UNIVERSITY OF PERNAMBUCO)6/9/26, 12:00 PMDosimetry and radiation protection in medicine and biologyOral Presentation
Within the scope of radiotherapy quality control, external dosimetry audits are essential for identifying systematic errors, improving treatment quality and safety, and promoting standardized dosimetry practices. In this study, the performance of linear accelerators was evaluated using a novel alanine/EPR-based postal dosimetry audit system developed at the Nuclear Energy Department of the...
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Mr CHIEH JUI LI (Chang Gung Memorial Hospital at Linkou, Taiwan)6/9/26, 2:00 PMDosimetry and radiation protection in medicine and biologyOral Presentation
Purpose
To evaluate the feasibility of utilizing a lead curtain to reduce scatter radiation in the control console area, ensuring compliance with regulatory dose limits while maintaining clinical workflow efficiency in general radiography.Methods and Materials
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A lead curtain (0.5-mm Pb equivalence, 800 mm × 2000 mm) was installed at the entrance separating the X-ray examination... -
Jakub Beinstein (Centrum výzkumu Řež s.r.o.)6/9/26, 2:00 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Regulatory requirements set by the radioactive waste repository operator and the waste processor necessitate verifying that waste intended for disposal does not contain materials exempt from regulation under applicable legislation or radionuclides with only short half lives. At the LVR 15 research reactor facility, the dominant contaminant in compressible waste is activated water from the...
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Cosmin-Marius Branzoi (”Horia Hulubei” National Institute for Research and Development in Physics and Nuclear Engineering (IFIN-HH), Extreme Light Infrastructure - Nuclear Physics (ELI-NP), 30 Reactorului Street, Magurele, 077125, Romania; Faculty of Power Engineering, National University of Science and Technology ”Politehnica” of Bucharest, Splaiul Independentei 313, Bucharest, 060042, Romania)6/9/26, 2:15 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Extreme Light Infrastructure - Nuclear Physics (ELI-NP) represents a world-class, state-of-the-art research infrastructure specifically designed to push the boundaries of photonuclear physics. The facility is equipped with advanced systems for the generation of high-energy particle fields, complemented by sophisticated monitoring instrumentation tailored for the precise detection and...
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Adrián Díaz Comeche (Universitat Politècnica de València)6/9/26, 2:15 PMDosimetry and radiation protection in medicine and biologyOral Presentation
Proton Therapy techniques are recommended to treat tumours in paediatric patients because they can deliver high dose levels to the target volume while sparing dose to surrounding healthy tissues and growing organs, reducing the probability of unwanted secondary effects. However, during proton therapy treatments secondary neutrons are generated in the patient and in the room components,...
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Ouissal Khattabi (CEA Saclay)6/9/26, 2:30 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Flash therapy is a radiation therapy technique that aims to take advantage of the potentially greater effectiveness of treatment using electrons with high absorbed dose rates, approximately 1 MGy/s. Several LINACs are currently being installed and tested to demonstrate the clinical benefits of this irradiation method. Laser acceleration processes promise even higher rates, about 100 GGy/s,...
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Dr Marta Mumot (MedAustron)6/9/26, 2:30 PMDosimetry and radiation protection in medicine and biologyOral Presentation
Proton therapy provides superior dose conformity compared to conventional photon techniques. However, nuclear interactions of therapeutic proton beams generate secondary radiation, particularly neutrons, contributing to out-of-field dose. Although generally low, accurate quantification of these doses is essential for risk assessment, radiation protection optimization, and validation of...
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Jovica Atanackovic (Ontario Power Generation)6/9/26, 2:45 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Using neutron spectrometry, we characterized the neutron energy spectra coming from irradiated components of a refurbished CANDU reactor. The measured neutron energy spectra were from refurbishment waste, from calandria tubes (CTs) and pressure tubes (PTs). The measurements were conducted using a Nested Neutron Spectrometer (NNS), manufactured by Canadian company DETEC Inc. They were...
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Massimiliano Antonini (Sapienza University of Rome, Department of Basic and Applied Sciences for Engineering, Rome, Italy)6/9/26, 2:45 PMDosimetry and radiation protection in medicine and biologyOral Presentation
Personalized dosimetry is a fundamental tool in nuclear medicine for monitoring and optimizing treatments with radionuclides. WIDMApp (Wearable Individual Dose Monitoring Application) [Morganti et al. Med. Phys. 2021] is an innovative approach under development to improve dosimetric accuracy by enabling personalized dose assessment during Targeted RadioNuclide Treatments (TRNTs) through...
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AMIR HASSAN ENTEZAM (School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia)6/9/26, 3:00 PMDosimetry and radiation protection in medicine and biologyOral Presentation
To support clinical translation of propagation-based phase-contrast breast CT (BCT) at the Imaging and Medical Beamline (IMBL) of the Australian Synchrotron, we developed and compared two patient-specific digital breast phantom modelling approaches for Monte Carlo–based mean glandular dose (MGD) estimation. The approaches included: (1) fully voxelated phantoms generated directly from...
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JUAN FRANCISCO NAVARRO AMARO (CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas)6/9/26, 3:00 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
The harmonisation of in vivo wound monitoring techniques is essential for improving emergency response and ensuring the comparability of results among laboratories. This work presents the methodology applied and the results obtained by the CIEMAT Whole Body Counter (WBC) Laboratory during its participation in the EURADOS/ARADOS intercalibration and intercomparison exercise on wound monitoring....
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Sita Gandes Pinasti (SCK CEN / ULB)6/9/26, 3:15 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Accurate neutron personnel monitoring in nuclear installations requires calibration fields that reproduce workplace spectral characteristics. Existing simulated neutron workplace fields (SWF) are largely optimized for nuclear reactor conditions and offer limited flexibility for representing spectra relevant to spent-fuel handling. This work presents the design and initial validation of a...
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Dr Rong-Jiun Sheu (National Tsing Hua University)6/9/26, 3:30 PM
A national primary standard for Tc-99m activity was established at NRSL/INER in Taiwan using a self-developed 4πex–γ coincidence counting system. The system integrates a compact flow-type 4π proportional counter with a thin NaI(Tl) detector optimized for the detection of low-energy internal conversion electrons and 140 keV γ-rays. Detection efficiency was systematically varied through...
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Ms Tsz-Yui Chan (Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan, Taiwan)6/9/26, 3:32 PM
Introduction: Proton minibeam radiation therapy (pMBRT) enhances normal tissue sparing through sub-millimetric beamlets that create high-dose peaks and low-dose valleys. While research often utilizes a single Bragg peak, limiting treatment depth, this work addresses clinical target coverage by developing a passive Spread-Out Bragg Peak (SOBP) system specifically for radiobiological research...
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Ana Gabryele Moreira dos Santos, Noemi Aguiar Silva (Federal University of São Paulo)6/9/26, 3:34 PM
In
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2002, Martin Ebert proposed the theoretical concept of Intensity Modulated
Brachytherapy, which uses brachytherapy sources that emit radiation anisotropically to
achieve dose intensity modulation [1]. To perform the dosimetric tests, a phantom was
constructed from an acrylic box filled with acrylate water gel and a 3D-printed inner box
made of polylactic acid or PLA. This phantom... -
GUMERSINDO JESUS VERDU MARTIN (Universitat Politecnica de Valencia)6/9/26, 3:36 PM
Introduction
Radiotherapy during pregnancy represents a clinical and radiological challenge, in which reliable fetal dose estimation is essential to balance maternal therapeutic benefit and fetal radiation risk. A fetal absorbed dose of 100 mGy is widely cited as a practical reference level in radiological protection guidance. Although analytical models and advanced simulations are used for...
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Maria da Penha Potiens (Instituto de Pesquisas Energéticas e Nucleares)6/9/26, 3:38 PM
This work focuses on the development of a specific metrology and dosimetry methodology for systems utilizing low-energy X-ray beams. The study is motivated by the increasing use of portable X-ray equipment and the lack of established dosimetry protocols for these systems, which are currently calibrated only by their manufacturers. The study's methodology involved the use of parallel-plate...
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Dr. Ahmed Alanazi (Northern Border University)6/9/26, 3:40 PM
Background: Positron Emission Tomography/Computed Tomography (PET/CT) plays a crucial role in diagnosing, staging, and monitoring head and neck malignancies. However, the combined radiation dose from both PET (e.g., 18F-FDG) and CT components raises concerns regarding patient exposure and long-term risks. Understanding and optimizing dose parameters, such as injected radiotracer activity, CT...
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Prof. Lu-Han Lai (Department of Medical Imaging and Radiological Technology, Yuanpei University of Medical Technology, Hsinchu, TAIWAN)6/9/26, 3:42 PM
Synchronous bilateral breast cancer (SBBC) requiring regional nodal irradiation (RNI) presents profound dosimetric challenges, particularly in sparing the heart and lungs. This study comprehensively evaluates the dosimetric impact of varying nodal irradiation targets using volumetric modulated arc therapy (VMAT) with two full arcs in hypofractionated regimens. Thirty SBBC patients were...
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Dr Leandro Mariano (Federal Institute of Parana), Anna Luiza Malthez (Federal University of Technology – Paraná)6/9/26, 3:44 PM
Dosimetry employing normoxic polyacrylamide gel (nPAG) dosimeters is a promising tool for recording and evaluating three-dimensional (3D) dose distribution in clinical linear accelerators (LINACs). Also, nPAG dosimeters can evaluate several informations required in quality assurance in radiotherapy treatments with photon and electron beams, such as beam profile, flatness and symmetry....
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Yu Fang Lin6/9/26, 3:46 PM
Small and narrow cutout fields of electron beam are commonly used in keloid radiotherapy. However, they pose several dosimetric challenges, including lateral scatter disequilibrium, source occlusion. This study investigated physical dose distributions for small and narrow fields used in keloid and breast scar boost radiotherapy. We conducted measurements in an Elekta Versa HD linear...
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Ms Anna Zampieri (Federal University of São Paulo), Dr sonia tatumi (Federal University of São Paulo)6/9/26, 3:48 PM
Optically Stimulated Luminescence (OSL)-based dosimetry has emerged as a promising technique for radiation monitoring in medical, environmental, and occupational applications. In this study, the OSL properties of lithium magnesium phosphate materials doped with titanium (LiMgPO₄:Ti) were investigated with the aim of optimizing sensitivity and dose-response linearity.Pure LiMgPO₄ and samples...
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Mrs Ana Laura Ramos Mitidiero (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil)6/9/26, 3:50 PM
Gynecological intracavitary brachytherapy is a standard treatment for cervical and endometrial malignancies. During applicator insertion, such as vaginal cylinders, air gaps often form between the applicator and vaginal mucosa [1]. These heterogeneities introduce uncertainties based on size and location, potentially altering dosimetric distribution [2]. Since commercial Treatment Planning...
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Mr Felipe Beraldo da Cruz (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil)6/9/26, 3:52 PM
External radiotherapy is one of the main treatment modalities for brain tumors. However, irradiation of structures adjacent to the target volume is unavoidable, particularly in procedures such as whole-brain radiotherapy (WBRT). Among the most frequent adverse effects is localized alopecia, resulting from dose deposition in the scalp [1]. Although a well-established correlation exists between...
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Mrs Ingrid Cristina dos Santos Silva (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil)6/9/26, 3:54 PM
Tongue cancer accounts for nearly 20,000 new cases projected for 2026, with a higher incidence in men [1]. Both teletherapy and brachytherapy are established treatment options. In this work, Monte Carlo simulations were used to investigate and compare the dosimetric characteristics of these two approaches. The absorbed dose in the adult male mesh-type virtual anthropomorphic phantom [2], was...
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Mr Victor Luiz Ossick Evangelista (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil)6/9/26, 3:56 PM
Hepatocellular carcinoma (HCC) accounts for more than 90% of primary liver tumors and is strongly associated with cirrhosis [1]. It is among the most incidental and lethal neoplasms worldwide, with low five-year survival rates due to late diagnosis and complex management. Risk factors include chronic viral hepatitis and alcoholic and metabolic liver diseases [2]. Hepatic radioembolization with...
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Mrs Fernanda Quadros Fuzato (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil)6/9/26, 3:58 PM
Breast cancer is the most frequently diagnosed cancer among women, with over 2 million new cases annually [1]. In advanced-stage cases, many patients undergo mastectomy followed by reconstruction with tissue expanders. These devices may remain in the patient’s body for several weeks, during which post-mastectomy radiotherapy is usually initiated. However, due to the presence of metallic...
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Adrián Díaz Comeche (Universitat Politècnica de València)6/9/26, 4:00 PM
The generation of secondary neutron fields in proton therapy treatments is a major concern because of the exposure of patients and staff to incidental dose. Even if current Pencil Beam Scanning techniques minimize neutron production compared to passive scattering, the risk of secondary cancers due to stray neutron dose—especially in paediatrics’—remains non-negligible. Many studies have...
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Prof. Abdelmoneim Sulieman (King Faisal Specialist Hospital and Research Center)6/9/26, 4:02 PM
Cardiac computed tomography (CCT) is widely used for non-invasive coronary artery assessment; however, it involves direct irradiation of the anterior chest, where breast tissue is located. Therefore, breast tissue receives a relatively higher absorbed dose compared with many other CT examinations that may contribute to cancer risks. This study evaluated patient radiation doses, effective doses...
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Cassio Vilela Komatsu (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil), Mr Felipe Beraldo da Cruz (Postgraduate Program in Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, PPGEB/UFU, Uberlândia, Brazil)6/9/26, 4:04 PM
The use of the surgical C-arm in orthopedic procedures is well established due to its ability to provide real-time fluoroscopic imaging, contributing to improved surgical precision and reduced operative time. However, scattered radiation represents a potential occupational risk to the medical staff, making it essential to understand its magnitude and angular distribution. This study evaluated...
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Dr Leticia França Fiuza Bacelar Bacelar, Dr Maria da Penha Albuquerque Potiens6/9/26, 4:06 PM
Introduction:Chest computed tomography (CT) is widely used in clinical practice, particularly in emergency settings and in the follow-up of respiratory diseases. The progressive increase in the use of this diagnostic method, intensified during the COVID-19 pandemic, has raised concerns regarding the cumulative exposure of the population to ionizing radiation and its potential public health...
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Yu Chieh Lin (Chang Gung Memorial Hospital at Linkou, Taiwan)6/9/26, 4:08 PM
Purpose: To evaluate the impact of different breast implant brands and their volumetric proportions on mean glandular dose (AGD) and Signal-to-Noise Ratio (SNR) in digital mammography.
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Methods: Three types of implants—Motiva Ergonomix®, MENTOR™ MemoryGel™, and Natrelle® Silicone-Filled Implants—were involved in the study. Implants were placed with CIRS BR3D phantoms to simulate compression... -
Mrs Ana Laura Burin (IPEN/USP)6/9/26, 4:10 PM
Accurate dosimetric assessment in anatomically complex regions such as the vertebral column is essential for advancing radiotherapy and brachytherapy strategies, particularly in the management of bone metastases. This study presents the development of a computational phantom of the vertebral column, constructed from DICOM imaging data and incorporating a localized tumor volume. The phantom was...
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Ping-Jung Hsieh (New Taipei Municipal Tucheng Hospital (Chang Gung Medical Foundation), Taiwan)6/9/26, 4:12 PM
Introduction: Monitoring radiation dose distribution is essential for patient safety during fluoroscopically guided interventions. While Air Kerma (AK) is the standard machine reported metric for X-ray intensity, it does not fully characterize the actual dose absorbed at varying tissue depths. This study evaluates the correlation between AK and patient-specific dose equivalents, Hp(0.07) for...
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Ms Yu-Hsuan Chen (Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan)6/9/26, 4:14 PM
BNCT for large-volume oral cavity cancer challenges the balance between maximizing tumour dose and protecting organs at risk. Single-field irradiation often fails to achieve deep-dose coverage due to entry angle constraints. This study evaluates the dosimetric impact of single-field versus two-field configurations. A retrospective analysis was performed for oral cavity cancer (GTV 96.46 cc)...
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Abdullah Almujally (Biomedical Physics Department, King Faisal Specialist Hospital and Research Center)6/9/26, 4:16 PM
Medical exposure to ionizing radiation during interventional procedures can lead to stochastic consequences, such as an increased risk of cancer, and deterministic tissue responses when threshold levels are surpassed. Cardiac catheterization procedures, including percutaneous coronary intervention (PCI), are commonly conducted in catheterization laboratories for many clinical indications and...
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Tsz-Yui Chan (Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University)6/9/26, 4:18 PM
Range uncertainty remains a major limitation in proton therapy because treatment planning depends on CT‐to‐stopping‐power conversion, which introduces an intrinsic uncertainty of approximately 3.5%. Discrete range modulation (DRM) proton radiography (pRG) provides a projection-based estimate of the water equivalent path length (WEPL) by delivering a sequence of discrete proton energies and...
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Dr Amjad ALYAHYAWI (Diagnostic Radiology Department, College of Applied Medical Sciences, University of Hail,Hail.)6/9/26, 4:20 PM
The mammary gland, originating from the ectoderm, is primarily responsible for milk production and, in humans, also has aesthetic and psychosocial importance. Breast size and contour vary widely among individuals, and complete symmetry is uncommon. Anatomically, the gland is composed of lobules that produce milk, connected by ducts that drain toward the nipple, and supported by fibrous stroma...
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Jacco de Pooter6/9/26, 4:22 PM
The FLASH-DOSE project addresses the urgent need for reliable and metrologically traceable reference dosimetry for FLASH radiotherapy using ultra-high proton dose rates (UHDR) and ultra-high pulsed electron beams (UHDPP). Preclinical studies have demonstrated the so-called FLASH effect, which can reduce damage to healthy tissues by up to 40% while maintaining antitumor effectiveness. However,...
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Ms Yu-Hsuan Chen (Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan)6/9/26, 4:24 PM
In two-field BNCT for oral cavity cancer, blood boron concentration estimates are required before treatment to generate dose plans. Understanding how this parameter affects dose distribution and irradiation time is essential for robust planning and treatment-day calibration. This study quantified these effects at 30 versus 40 ppm in a two-field BNCT plan for a large-volume tumour. A...
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Hugo Schelin (Federal University of Technology - Parana)6/9/26, 4:26 PM
Conventional radiography remains essential in pediatric imaging of the chest, skull, paranasal sinuses, pelvis, and abdomen. However, inadequate clinical justification and repeated exposures may increase unnecessary radiation doses in radiosensitive populations. This study evaluated the correlation between clinical indications, repetition rates, and entrance surface air kerma (Ka,e) in...
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Kwo-Ping Chang (Department of Medical Imaging and Radiological Sciences, Tzu-Chi University, Taiwan.)6/9/26, 4:28 PM
Barium sulfate (BaSO₄) contrast medium is widely used as a radiographic agent in gastrointestinal imaging. By coating and adhering to the gastrointestinal mucosa, it enhances radiographic contrast, facilitating improved visualization and the diagnosis of ulcers, tumors, and obstructions. This study aimed to assess the effects of barium sulfate contrast medium on dose evaluation in the linear...
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Ms Rasil Almuhanna (Princess Nourah bint Abdulrahman University), Ms renad alsulaiman (Princess Nourah bint Abdulrahman University)6/9/26, 4:30 PM
Shielding against ionizing radiation intends to protect workers, and public against ionizing radiation exposure, and prevents it adverse effect. Shielding designs are based on calculated assumptions (workload, use factor, occupancy, distance, beam quality). After installation and during operation, facilities must verify that radiation levels outside the room remain within acceptable limits and...
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Václav Štěpán (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)6/10/26, 9:00 AM
Unmanned aerial systems (UAS) are increasingly used in a wide range of domains, including radiation monitoring in the environment for geological as well as emergency response application. Advances in battery technology, precise positioning systems, and sensor performance, together with the development of regulatory frameworks facilitating beyond visual line-of-sight operations, have made UAS...
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Simon Krstevski6/10/26, 9:30 AMBasic concepts and principles in dosimetryOral Presentation
X-ray characteristic spectra constitute one of the most sensitive probes for testing relativistic quantum mechanics and quantum electrodynamics, playing a key role in both atomic physics research and industrial applications. Advanced relativistic theory has, however, been unable to predict such spectra, calling several foundational ideas into question. A core problem lies in the process to...
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Christopher Chantler (University of Melbourne School of Physics)6/10/26, 9:45 AMBasic concepts and principles in dosimetryOral Presentation
HERFD and RIXS have been a mainstay of advanced high-resolution spectroscopy particularly with HERFD-XAS. Much higher resolution spectra are obtainable than in X-ray absorption, with interesting challenging resolution functions. Two primary axes of incident and emission energy, are transformable to the energy-loss axis by rotation. Major challenges have included the difficulty of any...
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Jakub Luley (Slovak University of Technology in Bratislava)6/10/26, 10:00 AMBasic concepts and principles in dosimetryOral Presentation
Slovak Institute of Metrology (SMU) in cooperation with Slovak University of Technology in Bratislava developed a primary standard of dosimetry quantities for neutron radiation, which will ensure the realization of the emission rate unit at the sufficient metrology level. The key component is the manganese sulphate bath, which is used by many metrology institutes around the world. Utilization...
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Shaheen Dewji (Georgia Institute of Technology)6/10/26, 10:15 AMOther topics related to ionizing radiationOral Presentation
The 2025 Gilbert W. Beebe Symposium, convened by the U.S. National Academies’ Nuclear and Radiation Studies Board, examined the expanding role of artificial intelligence (AI) and machine learning (ML) across radiation therapy, medical diagnostics, and occupational health and safety. While technical advances were central, the symposium was framed around a broader epistemological question: how...
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Melika Karimloosayah (Tabriz University of Medical Sciences, Department of Medical Physics, PhD Student of Medical Physics)6/10/26, 11:00 AMComputational methods and modelling in dosimetryOral Presentation
Achieving an optimal balance between effective tumor control and healthy tissue protection remains a key challenge in radiotherapy. Conventional treatment planning methods are often limited to simplified mathematical models and cannot fully account for patients’ anatomical complexities and dynamic tissue responses.
In this study, we present an innovative approach integrating Monte Carlo...
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Mrs Tereza Kráčmerová (Motol and Homolka University Hospital)6/10/26, 11:00 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Background:
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Neuroblastoma is a paediatric solid tumour of the sympathetic nervous system, with high-risk disease typically corresponding to advanced-stage (stage 3–4). Activity administration is guided by body weight, with an initial activity of 444 MBq/kg, while the second cycle is adjusted to a cumulative whole-body absorbed dose of 4 Gy. Despite standardised regimens, absorbed doses to... -
Sabri MANAÏ (HE2B ISIB)6/10/26, 11:15 AMComputational methods and modelling in dosimetryOral Presentation
In radiation protection, accurately assessing individual exposure relies on operational quantities such as $H_p(10)$ and $H_p(3)$, which serve as measurable surrogates for the effective dose. However, designing compact electronic dosimeters that remain accurate across a wide range of photon energies and incidence angles is a significant challenge, especially when prioritizing low-cost and...
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Tommaso Maggipinto (Dipartimento Interateneo di Fisica, Univ. di Bari, Italy and Istituto Nazionale di Fisica Nucleare, Sez. di Bari, Italy)6/10/26, 11:15 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Proton radiation therapy exploits the localized energy deposition of proton beams at the Bragg peak. Its main advantage is the ability to deliver a high dose to the tumor while minimizing exposure to surrounding healthy tissues. However some limitations exist; for example, tumors located near critical organs may not receive a sufficiently high therapeutic dose without risking damage to healthy...
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Federica Roberto (SCK CEN)6/10/26, 11:30 AMComputational methods and modelling in dosimetryOral Presentation
To enable planning and dose assessment in Decommissioning and Dismantling (D&D) environments, we are developing a computational pipeline, based on Monte Carlo (MC) methods, through the application of Machine Learning (ML) techniques. The characterization of radiation fields is the first fundamental step in creating such pipeline.
In this work, we present a case study that demonstrates the...
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Emma Sofia Bellotti (Politecnico di Milano)6/10/26, 11:30 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Accurate control of beam penetration depth is a fundamental requirement in hadrontherapy. Despite advanced treatment planning systems and high-quality imaging, residual uncertainties in Bragg peak positioning persist due to anatomical variability, conversion uncertainties, and intrinsic physical processes. Such deviations may lead to irradiation of healthy tissues beyond the target or...
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GUMERSINDO JESUS VERDU MARTIN (Universitat Politecnica de Valencia)6/10/26, 11:45 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Introduction
The image quality reconstruction in Computed Tomography (CT) is dependent on different factors as the number of projections and angular sampling and the reconstruction method. In this work Fan‑Beam (FB) and Cone‑Beam (CB) CT geometries are studied, by different reconstruction algorithms applying reduced angular sampling.Materials and Methods
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It is implemented a methodology... -
Ervis Gega (Institute of Applied Nuclear Physics, University of Tirana)6/10/26, 11:45 AMComputational methods and modelling in dosimetryOral Presentation
This study brings an advanced experimental and computational investigation on the fading of thermoluminescent dosimeter signals to arrive at analytical rules and trained neural networks for the estimation of the potential accidental exposure of occupationally exposed workers. A systematic radiation measurement protocol was implemented, where personal dosimeters were exposed twice a week (20...
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Dr Chanh Q Tran (Department of Mathematical and Physical Sciences, La Trobe University, Victoria 3086, Australia)6/10/26, 12:00 PMComputational methods and modelling in dosimetryOral Presentation
Beam-hardening and material cross-contamination remain significant challenges in quantitative computed tomography of multi-component samples acquired using polychromatic X-ray sources. For medical applications, the limited precision and portability of CT scan results often necessitate multiple diagnostic scans, leading to unnecessary radiation exposure for patients.
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In this work, a... -
Pavel Špíšek (Advacam s.r.o.)6/10/26, 12:00 PMDosimetry and radiation protection in medicine and biologyOral Presentation
Background
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FLASH radiotherapy is an emerging technique that delivers radiation at ultra high dose rates (UHDR) and has demonstrated promising preclinical results, achieving effective tumor control while reducing normal tissue toxicity. The aim of this study was to develop a quality assurance (QA) system able to characterize the electron beam of a newly commissioned FLASHKNiFE (TheryQ)... -
Benoit Lefebvre (Extreme Light Infrastructure ERIC)6/10/26, 2:00 PM
Pulsed radiation fields are becoming increasingly prevalent in medical applications, industrial imaging, and at high-power laser facilities. Their fast time structure and extreme instantaneous dose rates pose challenges for accurate dosimetry, often causing pile-up effects and detector saturation in conventional monitoring systems. Even instruments specifically designed for pulsed fields...
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Aleksandar Krleski (1. South-West University Neofit Rilski, 66 Ivan Mihaylov Street, 2700, Blagoevgrad, Bulgaria 2. Ss. Cyril and Methodius University in Skopje, North Macedonia)6/10/26, 2:00 PMDosimetry in radiological and nuclear emergencies and accidentsOral Presentation
Salt-based materials have attracted increasing interest as potential detectors for retrospective radiation dosimetry due to their wide availability, low cost, and measurable radiation-induced luminescence response. In this paper, a thermoluminescence (TL) characterization of fortified commercial salts is presented and compared with reference salt materials, focusing on their dosimetric...
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Petr Průša (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)6/10/26, 2:15 PM
InGaN/GaN multiple quantum wells (MQW) heterostructures exhibit a truly unique set of scintillation properties, both highly advantageous and detrimental. Scintillation efficiency is high, emission is nicely spectrally matched to common photomultipliers and SiPMs, and, most importantly, the emission is ultra-fast with decay time around 1 ns. On the other hand, the maximum thickness of the...
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Caroline Fernandes (University of São Paulo)6/10/26, 2:15 PMDosimetry in radiological and nuclear emergencies and accidentsOral Presentation
Although several types of glass have been explored for their luminescent properties, studies on Ag-activated silicate glasses remain relatively limited, mainly due to their high melting temperatures, which typically reach around 1600 °C. Nevertheless, silicate-based glasses are known for their chemical and thermal stability compared with other glass systems. Aiming to obtain a more stable...
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Thomas Kormoll (Technische Universität Dresden)6/10/26, 2:30 PM
Tissue equivalency in terms of mass energy-absorption coefficients is particularly important in operational radiation protection, as the energy of the incident radiation field can vary significantly. In this regard, air would be nearly ideal as a detector material—were it not for its low density, which severely limits the number of interactions in practical radiation protection scenarios....
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Dr Hanan Aldousari (Ministry of health)6/10/26, 2:30 PMDosimetry in radiological and nuclear emergencies and accidentsOral Presentation
Background:
Accurate radiation dose assessment is central to effective management of radiological emergencies. While dosimeter technologies are widely available, their structured operational integration into multidisciplinary emergency response systems remains limited. Bridging this gap requires standardized training that translates dosimetry principles into applied clinical and field...
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Ms Ema-Nicoleta Adam6/10/26, 2:45 PM
Beryllium oxide (BeO) has gained increasing attention due to its strong optically stimulated luminescence (OSL) properties, tissue equivalence, ease of readout and favourable response across a wide energy range (30 keV – 6 MeV). However, BeOSL performance in the high-energy range requires further validation to ensure measurement accuracy in high-energy radiation fields. This study evaluates...
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Hassna Bantan (Hiroshima University)6/10/26, 2:45 PMDosimetry in radiological and nuclear emergencies and accidentsOral Presentation
Recent studies on smartphone-based film dosimetry have demonstrated the feasibility of using mobile camera imaging to estimate on-site radiation dose from radiochromic films, particularly Gafchromic EBT model, using different smartphone cameras in indoor environments. We developed a smartphone application integrated with a portable scanner that incorporated a reference-based calibration...
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David John (Ústav jaderné fyziky AV ČR, v.v.i.)6/10/26, 3:00 PMDosimetry in radiological and nuclear emergencies and accidentsOral Presentation
Electron paramagnetic resonance (EPR) is a highly sensitive technique used in retrospective dosimetry for dose assessment after radiation exposure, particularly in radiological and nuclear emergency scenarios. Tooth enamel is considered the most suitable human tissue for EPR-based dose reconstruction due to its high radiation sensitivity and long-term signal stability. However, the EPR...
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Josep M Martí-Climent (Clínica Universidad de Navarra), Carles Domingo (Universitat Autonoma de Barcelona)6/10/26, 3:00 PM
Neutron detector performance is usually assessed below 10 MeV, well under the 230 MeV maximum used in proton therapy. This study evaluated five active neutron H(10) detectors in a proton therapy facility.
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Methods
Irradiations were performed with the gantry at 270° in pencil-beam-scanning mode, simulating a treatment layer plan (10×10cm²) in a solid-water phantom.
H(10) was measured... -
Marie Davídková (National Radiation Protection Institute, Prague, Czech Republic)6/10/26, 3:15 PMDosimetry in radiological and nuclear emergencies and accidentsOral Presentation
Citizen-led radiation measurements play an increasingly important role in environmental monitoring, but they also raise important social and legal questions about how such data can be used by official authorities and institutions. On one hand, measurements provided by the public can enhance transparency, but on the other hand, the data often vary in accuracy, calibration, and methodology....
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Carles Domingo (Universitat Autonoma de Barcelona)6/10/26, 3:15 PM
During proton therapy, neutrons originate by interaction of the protons in the beam with any material that they could find along their path to the patient’s treatment volume. This includes accelerator elements present in the beam line, potential beam deviations leading to collisions with the beam pipe or other accelerator elements and, the patient’s tissues. The resulting neutron field...
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Dr JESSICA MOSQUEIRA-YAURI (UNSA)6/10/26, 3:30 PM
Jessica Mosqueira-Yauri$^1$, Fanny Ramos-Chui $^1$ ,Edwar A. Canaza$^1$, Jorge Ayala-Arenas $^1$, Nilo F. Cano$^2$
$^1$Universidad Nacional de San Agustín, Arequipa, Perú
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$^2$Universidade Federal de São Paulo, SP, Brazil
The thermoluminescence (TL) of a material depends on the synthesis process, the percentage and type of dopant used, and the impurities present in its crystal structure. ... -
Abdelmoneim Sulieman (Biomedical Physics Department, King Faisal Specialist Hospital and Research Center)6/10/26, 3:32 PMDosimetry and radiation protection in nuclear installations and at acceleratorsPoster
Cyclotron facilities are essential for the production of medical radionuclides, including ¹⁸F, ¹¹C, ¹³N, and ¹⁵O, which are widely used in positron emission tomography (PET) imaging. However, cyclotron operation involves high-energy particle acceleration and target irradiation, generating complex radiation fields and potential occupational hazards. Therefore, continuous monitoring of...
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Ana Jambrina (VTT Technical Research Centre of Finland Ltd)6/10/26, 3:34 PMDosimetry and radiation protection in nuclear installations and at acceleratorsPoster
The extended operation of many pressurized water reactors now exceeds their original design lifetimes, elevating the importance of stringent safety requirements. A central consideration in evaluating the feasibility of further lifetime extension is the accurate assessment of neutron‑induced embrittlement in the reactor pressure vessel (RPV), as this degradation mechanism directly limits...
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Jaroslav Klusoň (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)6/10/26, 3:36 PM
The Faculty of Nuclear Sciences and Physical Engineering CTU in Prague (FNSPE) has been providing periodic monitoring of the impact of the operation of the NPP Temelin on the environment since 2000 (including the zero state). Monitoring is conducted at 29 selected reference points within an area with radii of 2, 5, 10, and 20 km around the NPP. Samples of Schreiber's moss, forest humus, pine...
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Václav Štěpán (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)6/10/26, 3:38 PM
Zadní Chodov is a uranium mine in Český les, some 130 km west from Prague and less than six kilometers from the German border. With 4152 tons of uranium mined between its discovery in 1952 and closing of the mine in 1992, this was the sixth largest deposit in Czech Republic and is a Category III workplace according to the Czech legislation.
Flooding of the mine started in February 1993...
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Ms Christina Antoniadou (ELI Beamlines, ELI ERIC)6/10/26, 3:40 PMDosimetry and radiation protection in nuclear installations and at acceleratorsPoster
High-power laser facilities generate ultra-short (sub-nanosecond), ultra-high dose-rate particle fields with instantaneous dose rates reaching $10^8 - 10^{10}$ Gy/s and complex mixed particle compositions including neutrons, photons, electrons, and protons. Accurate dosimetry under these conditions remains a major challenge due to detector saturation, recombination effects, limited temporal...
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Václav Štěpán (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)6/10/26, 3:42 PM
Public open caves belong to underground workplaces with radon. The average annual radon concentration in caves in the Czech Republic reaches up to 2500 Bq·m$^{-3}$. The methodology for estimation of effective dose (E) from radon for the cave guides is based on integral radon activity concentration measurement (using trace detectors RamaRn) and evidence of working hours spent in the underground...
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Tomáš Trojek (Czech Technical University in Prague)6/10/26, 3:44 PM
The identification of uranium in samples does not have to rely solely on spectrometry of ionizing radiation produced within its radioactive decay. More effective methods could be based on the stimulated emission of characteristic X-ray radiation of uranium in a sample using a suitable radiation source. In X-ray fluorescence analysis (XRF) performed with benchtop devices, these sources could be...
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Andrej Mojzeš (Comenius University in Bratislava)6/10/26, 3:46 PM
The geological structure of the Western Carpathians in Slovakia is very diverse and reflected in natural radioactivity. Slovakia is relatively rich in mineral, as well as deposit-forming occurrences of uranium and thorium ores. Likewise, many rock formations contain potassium in their basic matrix. The origin of the increased surface radioactivity may lie either in the lithogeochemical...
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Cristina Trull-Hernandis (Universitat Politècnica de València)6/10/26, 3:48 PM
Radon is a radioactive gas that can be present naturally in environments either in the soil, dissolved in their waters or in the air phase of enclosed areas. In spaces with large bodies of radon-bearing water, the radon dissolved can be released from the water to indoor air. Due to the risks derived from the inhalation of radon and its progeny, radon levels must be controlled in areas with...
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Mr Wei-Han Chu (National Atomic Research Institute/National Tsing Hua University), Prof. Rong-Jiun Sheu (National Tsing Hua University)6/10/26, 3:50 PM
Current metrological frameworks exhibit a significant traceability gap between ambient background levels and standard calibration intensities, complicating the characterization of radiation detectors at low dose rates. This study addressed this limitation by developing an environmental-level air kerma rate calibration system using a Co-60 source with lead attenuators (3.5–9.0 cm) in compliance...
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Domen Govekar (Jožef Stefan Institute)6/10/26, 3:52 PMDosimetry and radiation protection in nuclear installations and at acceleratorsPoster
Activated water is a significant radiation source in DT fusion-oriented research environments, where neutron-activated cooling and auxiliary water systems can produce mixed-energy gamma fields that complicate measurement and dose assessment. Separating low- and high-energy dose contributions is still challenging. In this work, incremental lead shielding is applied as a controlled,...
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Hugo Schelin (Federal University of Technology - Parana)6/10/26, 3:54 PM
Indoor radon is a major contributor to natural radiation exposure and is recognized as the second leading cause of lung cancer worldwide. It originates from the decay of uranium and thorium naturally present in soil and building materials and can enter buildings through cracks and structural openings. This study aimed to measure indoor radon concentrations in residences located in Carambeí and...
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Aina Noverques Medina, Cristina Trull-Hernandis (Universitat Politècnica de València)6/10/26, 3:56 PM
Understanding the interaction between radon, its short-lived progeny, and respiratory protective equipment such as face masks (surgical and FFP3) is essential to improve the assessment of inhalation exposure in environments with elevated radon levels. In particular, distinguishing between the behavior of primary radon gas and particle-bound progeny is key to evaluating the effectiveness of...
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Helena Velyčková (Nuclear Physics Institute of the Czech Academy of Sciences)6/10/26, 3:58 PM
The Gamma Spectrometry of Thunderstorm Radiation Observatory Network (GASTRON) is a distributed system of ground-based gamma spectrometers dedicated to the detection and characterization of high-energy radiation phenomena associated with thunderstorms, including Terrestrial Gamma-ray Flashes (TGFs) and Thunderstorm Ground Enhancements (TGEs), also called gamma-ray glows. Building on previous...
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Francesco Teodori (University of bologna)6/10/26, 4:00 PM
A multipurpose health physics code was developed to provide a comprehensive and reliable computational framework for the assessment of radiation dose and associated health risk to individuals and populations. The system supports both retrospective analyses (post-event reconstruction of exposure and dose) and prospective evaluations (predictive assessments for planned or hypothetical release...
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Hugo Schelin (Federal University of Technology - Parana)6/10/26, 4:02 PM
Radon (222Rn) is a naturally occurring radioactive gas that represents a significant source of internal exposure to ionizing radiation. In regions where groundwater is used for human consumption, radon dissolved in well water may contribute to ingestion dose and indoor air contamination. This study aimed to evaluate radon concentrations in well water, rocks, and soil samples collected in the...
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Martina Lužová (Nuclear Physics Institute CAS, Řež, Czech Republic)6/10/26, 4:04 PM
Measurements of secondary cosmic radiation in the lower atmosphere provide important insight into particle acceleration processes in thunderstorms and high-energy atmospheric physics. Observations performed with the MOSAIC detector, a compact four-layer silicon strip tracking system designed for directional measurements of charged particles, will be reported.
The detector has been deployed...
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Ondřej Ploc (Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Prague, 180 00, Czechia)6/10/26, 4:06 PM
This study investigates the radiation field generated during high-voltage switching impulse discharges, extending our prior work that confirmed photon/electron and neutron radiation components for atmospheric impulses (1.2/50 μs waveform) using passive detectors. While the atmospheric impulse waveform has been extensively studied in the context of lightning discharge simulation, the switching...
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Martin Kaschner (KDAIZ, FJFI, ČVUT v Praze)6/10/26, 4:08 PM
Gas transport within permeable waste rock may result in the exhalation of hazardous gases, such as radon-rich or oxygen-deficient air, driven by seasonal stack-effect airflow. While the airflow regime can be identified by differential pressure monitoring or ground surface temperature analysis, characterizing the spatial heterogeneity of emissions across an entire landform remains a significant...
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Monika Müllerová (Fakulta matematiky, fyziky a informatiky, Univerzita Komenského v Bratislave)6/10/26, 4:10 PM
Between years 2015 and 2026 several indoor radon surveys in selected Slovak kindergartens were realized using passive track detectors with three months exposure. In total 61 kindergartens were monitored, in 37 of them one-year long survey was conducted and in 27 kindergartens also continuous monitoring was performed, at least during one three-month exposure of passive detectors. Annual average...
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Mr Václav Procházka6/10/26, 4:12 PM
Massic activity of Cs-137 has been measured in homogenized dried fronds of the fern Athyrium filix-femina. Samples were collected in 2005 and represent 35 biomonitoring plots in coniferous (prevalently spruce) forests across the Czech Republic. We combined the results with some data from the same sites partly presented in previous publications, including contents of stable cesium (Cs-133) in...
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Yu-Tien Tsai (National Atomic Research Institute)6/10/26, 4:14 PMDosimetry and radiation protection in nuclear installations and at acceleratorsPoster
To support the establishment of a future 30–70 MeV proton irradiation facility and to facilitate experiment planning for semiconductor irradiation experiments and radiobiology studies, this work develops a beam evaluation framework that links beam characteristics to application-oriented irradiation conditions prior to facility operation. The framework establishes physical baselines by...
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Dr Eva Doménech (Universitat Politecnica de Valencia. Food UPV)6/10/26, 4:16 PM
Extreme weather events, such as the isolated high-level depressions (DANA) in Valencia in October 2024, may result in significant erosion and soil structural degradation. This study presents the results of the assessment of the impact of the DANA on the natural radiological levels of agricultural soils of citrus fields in the Valencia region. The natural radioactivity levels in these soils,...
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Anna Luiza Malthez (Federal University of Technology – Paraná)6/10/26, 4:18 PMDosimetry and radiation protection in nuclear installations and at acceleratorsPoster
The micro X-ray computed tomography is a non-destructive 3D imaging technique, being especially interesting for characterizing materials opaque to visible light, as minerals and biological samples. Conventional equipment (benchtop, medical, or industrial tomographs) offer limited spatial resolution of a few tens of micrometers for small samples (a few millimeters), and measurements are taken...
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Ondřej Kořistka6/10/26, 4:20 PM
Variations in radon concentration in underground environments have long been investigated as potential indicators of geodynamic processes. Changes in tectonic stress may open new migration pathways for subsurface gases, leading to measurable anomalies in radon concentration. Such anomalies have been reported prior to several seismic events, suggesting that radon monitoring could contribute to...
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Joanna Rocznik (Silesian University of Technology)6/10/26, 4:22 PM
Luminescence dating accuracy relies on precise determination of the total dose rate ($D_r$). While alpha and beta radiation effects are highly localised, gamma radiation forms a complex, continuous field influenced by the heterogeneous distribution of radionuclides throughout a sediment profile. Standard dosimetry often overlooks these spatial fluctuations, potentially leading to age...
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Abdelmoneim Sulieman (King Faisal Specialist Hospital and Resarch Centre)6/11/26, 9:00 AM
Exposure to ionizing radiation for medical purposes accounts for more than 98% of man-made radiation exposure. The rapid expansion of medical imaging has significantly increased population radiation doses, with medical procedures contributing approximately 50% of the annual per-capita radiation exposure, compared with about 15% in the 1980s. Most medical imaging procedures involve localized or...
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Jozef Sabol (Policejní akademie ČR v Praze)6/11/26, 9:30 AMOther topics related to ionizing radiationOral Presentation
The Police Academy of the Czech Republic in Prague has been participating in two EU Horizon projects: one aimed at protecting the population against CBRN threats in urban areas, and the other focused on protecting the population in closed spaces. Special attention was paid to the radioactive and nuclear materials. The paper presents specific characteristics of individual CBRN agents, along...
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Prof. Sebastian Martorell (UNIVERSITAT POLITÈCNICA VALÈNCIA)6/11/26, 9:45 AMOther topics related to ionizing radiationOral Presentation
Directive 2013/59/EURATOM, incorporated into Spanish legislation through Real Decreto 1029/2022, establishes a maximum annual indoor external exposure of 1 mSv from gamma radiation emitted by construction materials. This research examines the radiological properties of widely used building materials in Spain, such as concrete blocks, clay bricks, ceramic tiles, marble, and newer products,...
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Hao Ding6/11/26, 10:00 AMOther topics related to ionizing radiationOral Presentation
Radiotherapy with nanoparticles has been widely investigated, showing an energy dependence performance. A compact radiotherapy equipment providing energy tuneable X-rays is highly demanded. Inverse Compton Scattering (ICS) source can offer quasi-monochromatic and continuously energy tuneable X-rays, enabling optimization of radiation enhancement effect for various nanomaterials. This study...
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Branislav Vrban (Slovenská technická univerzita v Bratislave)6/11/26, 10:15 AMOther topics related to ionizing radiationOral Presentation
The study investigates the use of Bayesian Neural Networks (BNNs) to estimate aleatoric and epistemic uncertainties in radiation‑dose measurements obtained with Poly(Allyl Diglycol Carbonate) solid‑state nuclear track detectors. The detectors were irradiated with alpha particles and fast neutrons across multiple experimental configurations, producing a complex dataset well-suited for...
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Shaheen Dewji (Georgia Institute of Technology)6/11/26, 11:00 AMComputational methods and modelling in dosimetryOral Presentation
Mechanistic inhalation dosimetry for airborne radionuclides requires spatially resolved particle deposition profiles within anatomically realistic respiratory tract geometries. Compartmental approaches, including those of the International Commission on Radiological Protection (ICRP), assume regionally uniform deposition and population-averaged morphometry, limiting resolution for emergency...
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HT ZUBAIR (MULTIMEDIA UNIVERSITY, MALAYSIA)6/11/26, 11:00 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Ultra-high dose-rate (FLASH) radiotherapy presents significant challenges for real-time dosimetry, particularly due to detector saturation and pulse pile-up at elevated pulse repetition frequencies (PRF). Glass fibre-coupled scintillators are well suited to this environment owing to their prompt radioluminescence response and microsecond-scale timing characteristics, which enable...
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Ana Jambrina (VTT Technical Research Centre of Finland Ltd)6/11/26, 11:15 AMComputational methods and modelling in dosimetryOral Presentation
Pulse‑height detectors are a standard instrument in Monte Carlo radiation‑transport simulations for reproducing high‑fidelity photon‑interaction spectra essential to gamma‑spectrometry analysis. Their use requires reconstructing the complete sequence of energy‑deposition events arising from all photon and secondary‑particle interactions within the detector medium.
This work presents a...
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Prof. Gonzalo Garcia (Universidad Politécnica de Madrid (UPM))6/11/26, 11:15 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Background and Aims
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Carcinoma during pregnancy presents a complex clinical challenge, requiring a balance between optimal maternal treatment and fetal safety. Radiotherapy is generally avoided during early pregnancy because of potential developmental risks; however, technological advances have improved treatment precision and reduced unintended radiation exposure.
This study evaluates fetal... -
Prof. Jorge Eduardo FERNANDEZ (Alma Mater Studiorum University of Bologna)6/11/26, 11:30 AMComputational methods and modelling in dosimetryOral Presentation
The Compton effect is a well-known scattering process. When the incoming photon energy is sufficiently high, it represents a possible ionization mechanism for the inner shells of atoms. The resulting vacancies can be filled through spontaneous atomic relaxation, a process analogous to photoabsorption.
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A preliminary description based on the Waller–Hartree approximation [1] showed that, for K... -
Prof. Gonzalo Garcia (Universidad Politécnica de Madrid (UPM))6/11/26, 11:30 AMDosimetry and radiation protection in medicine and biologyOral Presentation
Background and Aims
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The EDNEP project (Evaluation of Neutron Dosimetry Equipment for Proton Therapy Facilities), funded by the Spanish Nuclear Safety Council (CSN), addresses the increasing need for accurate neutron dosimetry in modern proton therapy centers. As the number of proton therapy installations grows in Spain and worldwide, secondary neutron radiation generated during treatment has... -
Andrea Nathalia Vargas Castillo (Czech Technical University in Prague)6/11/26, 11:45 AMDosimetry and radiation protection in medicine and biologyOral Presentation
The clinical introduction of magnetic resonance-guided linear accelerators (MR-Linacs) in 2017 represents, to date, one of the most promising techniques for cancer treatment. By combining the high soft-tissue contrast provided by MRI with a linear accelerator, these systems allow for precise radiation delivery, real-time target visualization and tracking, and the potential reduction of...
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Roberto Méndez (CIEMAT)6/11/26, 11:45 AMComputational methods and modelling in dosimetryOral Presentation
The International Standard ISO8529 on Neutron Reference neutron radiations fields, that constitutes the reference for the neutron calibration laboratories is under revision. Part 1 and 3, covering characteristics and methods of production, and the calibration of area and personal dosemeters respectively have already been updated. Part 2: Calibration fundamentals of radiation protection devices...
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Terver Daniel (Department of Physics, Benue State University Makurdi (now Rev. Fr. Moses Orshio adasu University, MAkurdi, Benue State, Nigeria))6/11/26, 12:00 PM
The effective prompt response function full width at half maximum, PRF FWHM of 637 ps (obtained from the prompt gamma pairs of 477 keV and 700 keV associated with the yrast 2+ state in 206Po), and 1007 ps (obtained from the Compton gamma pairs of 189 keV and 237 keV associated with the 192Os( 18O, 16O) 194Os 2 neutron transfer reaction) were used in fitting the time difference spectra obtained...
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Dr Ron Tosh (Radiation Physics Division, National Institute of Standards and Technology)6/11/26, 12:00 PMDosimetry and radiation protection in medicine and biologyOral Presentation
While nanopore techniques have transformed genomics, their potential for single-molecule biodosimetry remains untapped. We demonstrate a nanopore-based method to quantify DNA fragmentation in 2500 BP(base pairs) samples in solution, exposed to doses ranging from 1 Gy to 20 Gy of radiation from Co-60 gammas, 150 MeV protons, and Cf-252 neutrons. Using a fabricated nanopipette resistive pulse...
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Benjamin Dyer (McMaster University)6/11/26, 2:00 PM
A compact beta spectrometer (10×10×12 cm$^3$) has been developed for electron spectrometry in challenging radiation environments, including low Earth orbit and nuclear reactor interiors, where intense gamma backgrounds complicate spectral measurements. The spectrometer uses a telescopic configuration of single-area silicon detectors, allowing the gamma field to be discriminated against while...
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Dr Alvaro de Farias Soares (University of Palermo)6/11/26, 2:15 PM
Alanine, as measured by electron paramagnetic resonance (EPR), has long been employed in medical dosimetry as either a secondary standard or a transfer dosimeter, due to its linear dose response over a wide absorbed-dose range, soft-tissue equivalence, and independence from dose rate. However, advances in radiotherapy, e.g., novel radiation qualities and delivery techniques, necessitate...
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Ariel Tarifeno-Saldivia (Instituto de Fisica Corpuscular (CSIC-UV)), Mrs Benedetta Brusasco (Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya)6/11/26, 2:30 PM
Monitoring neutron ambient dose equivalent H*(10) is a key requirement for radiation protection in a wide range of facilities, including nuclear industry, research accelerators, and modern medical facilities. Commercial ambient neutron dosimeters currently available were mostly designed in the late 1990s and early 2000s, presenting well-known limitations in portability, energy response...
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Akihiro Takeuchi (QST)6/11/26, 2:45 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Introduction
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A fourth-generation synchrotron light source: NanoTerasu consists of a 3-GeV linear accelerator (linac) and a storage ring equipped with insertion devices. Since the stored beam current in the storage ring decays due to beam lifetime effects caused by residual gas scattering and Touschek scattering, electrons are continuously injected from the linac in top-up mode to maintain... -
Carmen Bueno (IPEN-CNEN)6/11/26, 3:00 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
The dosimetry characterization of a mobile electron-beam (EB) facility, tailored to treat industrial wastewater on site, is reported in this work. The accelerator operates at electron-beam energies of 500-700 keV and currents of 1-28 mA. The beam is magnetically scanned at 200 Hz to cover approximately 60 cm of a continuous water flow with a depth of 5 mm. Several well-established dosimeters...
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Tamás Pázmándi, Zsófia Rékasi6/11/26, 3:15 PMDosimetry and radiation protection in nuclear installations and at acceleratorsOral Presentation
Internal dose assessment involves complex analytical procedures and expert judgement, including the selection of appropriate biokinetic models, evaluation of measurement uncertainties, and the application of case-specific assumptions. Consequently, identical measurement data may lead to different intake and dose estimates when assessed by different laboratories. Intercomparison exercises...
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Tomas Trojek (Czech Technical University in Prague)6/11/26, 3:30 PMOral Presentation
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