ICDA-5

Session

Poster session

Jun 8, 2026, 5:45 PM

CTU in Prague, Faculty of Nuclear Sciences and Physical Engineering (Prague, Czechia)

35. Quantitative Impact of ICRU Report 90 on the NRSL/INER Ir-192 Primary Reference Air Kerma Rate Standard

Dr Rong-Jiun Sheu (National Tsing Hua University)

6/8/26, 5:45 PM

Basic concepts and principles in dosimetry

Poster

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...

135. Uncertainty and Sensitivity Analysis of the Effective Dose in an Industrial Exposure Scenario at a Decommissioned Nuclear Facility Using the RESRAD‑ONSITE Code

Patricia Mayo (ISIRYM,Universitat Politècnica de València)

6/8/26, 5:47 PM

Computational methods and modelling in dosimetry

Poster

Introduction:
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...

21. Computational Validation of a Traceability Chain for PKA Meter Calibration

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

Computational methods and modelling in dosimetry

Poster

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...

20. EVALUATION OF THE LINEARITY OF A NEW DOSIMETRIC SUPPORT

GABRIEL NASCIMENTO (Instituto de Pesquisas Energéticas e Nucleares)

6/8/26, 5:51 PM

Basic concepts and principles in dosimetry

Poster

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...

204. Pipeline applied in dicom complete studies to extract dosimetric parameters

bruno chaves dos santos

6/8/26, 5:53 PM

Computational methods and modelling in dosimetry

Poster

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...

133. Errors in the calculation of dosimetry quantities from airborne gamma spectrometry data and possibilities of their reduction

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

Computational methods and modelling in dosimetry

Poster

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...

116. Radiological characterization and radon exhalation assessment of building materials in powdered and finished states

Cristina Trull-Hernandis (Universitat Politècnica de València)

6/8/26, 5:57 PM

Radiation detection and spectrometry

Poster

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.
This work presents an...

33. Optimization of Long-term Counting Stability in 2π Proportional Counter via Dynamic Flow Equilibrium and Real-time Barometric Compensation

Dr Rong-Jiun Sheu (National Tsing Hua University)

6/8/26, 5:59 PM

Radiation detection and spectrometry

Poster

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...

53. Nuclear Spectrometric System for Characterizing Unknown Fast Neutron Fields

Dr Aleš Jančář (BERTIN VF NUCLEAR)

6/8/26, 6:01 PM

Radiation detection and spectrometry

Poster

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.
The hardware platform of the system is...

187. Development of a Small-Area Gas Flow Proportional Counter for Uniformity Mapping of Large Area Reference Sources

Ademar José Potiens Júnior, Maria da Penha Potiens (Instituto de Pesquisas Energéticas e Nucleares), Raphael Elias Diniz

6/8/26, 6:03 PM

Radiation detection and spectrometry

Poster

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...

185. Optimization of Gamma Spectrometry Acquisition Parameters for Drums Eligible for Clearance

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

Radiation detection and spectrometry

Poster

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...

162. Full-Field X-ray Fluorescence Imaging of Uranium-Rich Domains in Mineralized Samples from a Sandstone-hosted Uranium Deposit

Hana Průšová (CVUT, FJFI, KDAIZ)

6/8/26, 6:07 PM

Radiation detection and spectrometry

Poster

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.
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...

208. Safe training solution for unsafe radiological emergency operational readiness training

Václav Štěpán (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)

6/8/26, 6:09 PM

Dosimetry in radiological and nuclear emergencies and accidents

Poster

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....

39. Outcome of the RetroGlass Project: TL characterization of smartphone screen glass for emergency retrospective dosimetry across current phone models

Michael Discher (Paris Lodron University Salzburg)

6/8/26, 6:11 PM

Dosimetry in radiological and nuclear emergencies and accidents

Poster

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...

194. Spatially Resolved X-ray Diffraction Mapping of Welded Metals Using a Multipixel Color X-ray Camera

Andrej Gvozdic (Czech Technical University in Prague)

6/8/26, 6:13 PM

Dosimetry and radiation protection in industry

Poster

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...

32. Radiation Dose Assessment for Handheld XRF Operators in Taiwan

Prof. Fang-Yuh Hsu (National Tsing Hua University)

6/8/26, 6:15 PM

Dosimetry and radiation protection in industry

Poster

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...

50. Gamma irradiation and alanine dosimetry for sterilization of Aedes aegypti males in SIT applications

VIVIANE ASFORA (UFPE)

6/8/26, 6:17 PM

Dosimetry and radiation protection in industry

Poster

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...

17. Workplace field interlaboratory comparison on etched track neutron personal dosimetry

Michael Hajek (International Atomic Energy Agency)

6/8/26, 6:19 PM

Personnel dosimetry and monitoring

Poster

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...

211. Spectral Characterization and Monte Carlo Evaluation of a TLD-600/TLD-700 Neutron Personal Dosimetry System in a Reference Am–Be Irradiation Field

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

Personnel dosimetry and monitoring

Poster

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...

195. Procedures for Ensuring Radiation Protection of Selected Groups of Persons in Therapy with Radiopharmaceutical Labelled Lu-177

Jana Hudzietzová (Faculty of Biomedical Engineering, Czech Technical University in Prague, CZECH REPUBLIC)

6/8/26, 6:23 PM

Personnel dosimetry and monitoring

Poster

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...

152. A 20-year bibliometric analysis for eye lens dosimetry in occupational exposure.

Eleni Papadomarkaki (GREEK ATOMIC ENERGY COMMISSION (EEAE))

6/8/26, 6:25 PM

Personnel dosimetry and monitoring

Poster

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...

72. Performance Evaluation of Eye Lens Dosimeters (TLD and OSLD) under ISO and ANSI Standards: A National Proficiency Testing Study

Dr Ying-Lan Liao (National Atomic Research Institute)

6/8/26, 6:27 PM

Personnel dosimetry and monitoring

Poster

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.
Materials and Methods: Ten dosimetry...

65. How radiation risk communication is affected by too many currently used quantities

Jozef Sabol (Police Academy of the Czech Republic in Prague)

6/8/26, 6:29 PM

Other topics related to ionizing radiation

Poster

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...

218. Investigation of Air Gap Effects on the Calibration and Neutron Response of Thermoluminescent Dosemeters using Monte Carlo Methods

M. Hiller (RadCon GmbH, Augsburg, Germany)

6/8/26, 6:31 PM

Personnel dosimetry and monitoring

Poster

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...

215. The communication of radiation risk with the public, patients and workers

Mr Jozef Sabol (Police Academy of the CR in Prague, Czech Republic)

6/8/26, 6:33 PM

Other topics related to ionizing radiation

Poster

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...

192. Enhancing Regulatory Compliance In Radiation Protection: A Retrieval-Augmented Generation (Rag) Approach For IAEA And CNEN Standards

Ademar José Potiens Júnior

6/8/26, 6:35 PM

Other topics related to ionizing radiation

Poster

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...

154. XRF scanning as a probe into mobility of contaminants in wood from a Mediaeval smelting area

Mr Václav Procházka (KDAIZ, FJFI ČVUT v Praze)

6/8/26, 6:37 PM

Other topics related to ionizing radiation

Poster

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...

148. Role of Alkaline Earth Oxides in Tailoring Gamma-Ray Shielding Performance of TeO₂–B₂O₃–PbO Glasses

Aljawhara Almuqrin (Princess Nourah bint Abdulrahman University)

6/8/26, 6:39 PM

Other topics related to ionizing radiation

Poster

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...

83. Evaluation of image filtering methods for radiation dose optimization in digital radiography using the Alderson RANDO phantom

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

Other topics related to ionizing radiation

Poster

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...

150. A Modular Portable Digital TDCR System with Integrated Shutter Design for Mobile Operation

Dr Rong-Jiun Sheu (National Tsing Hua University)

6/8/26, 6:43 PM

Radiation detection and spectrometry

Poster

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...

145. Silicon based neutron detectors using 3D printed converters

Carles Domingo (Universitat Autonoma de Barcelona)

6/8/26, 6:45 PM

Radiation detection and spectrometry

Poster

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,...

181. RADIOLOGICAL PROTECTION REGULATION: A COMPARATIVE ANALYSIS OF BRAZILIAN AND PORTUGUESE LEGISLATION AS A REFERENCE FOR ANGOLA IN LIGHT OF ICRP AND IAEA RECOMMENDATIONS

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

Other topics related to ionizing radiation

Poster

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...

131. Experimental Study on Radon Mitigation by Laminated Plasterboard Panels: Effects of Configuration and Surface Finish on Reduction Efficiency

Beatriz Garcia Fayos (Universitat Politècnica de València)

6/8/26, 6:49 PM

Environmental dosimetry and monitoring

Poster

Introduction
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...

132. Experimental Study of Conventional Building Materials as Radon Barriers for indoor spaces: Influence of Orientation and Surface Finish

Beatriz Garcia Fayos (Universitat Politècnica de València), GUMERSINDO JESUS VERDU MARTIN (Universitat Politecnica de Valencia)

6/8/26, 6:51 PM

Environmental dosimetry and monitoring

Poster

Introduction
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...

36. Establishment of a national primary standard for Tc-99m activity using a self-developed 4πex–γ coincidence counting system and traceable transfer to clinical instrumentation

Dr Rong-Jiun Sheu (National Tsing Hua University)

6/9/26, 3:30 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

37. Implementation of a Passive SOBP Proton Minibeam System on a Static Scattering Beamline

Ms Tsz-Yui Chan (Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan, Taiwan)

6/9/26, 3:32 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

6. Development of a dosimetric system for IBMT brachytherapy

Ana Gabryele Moreira dos Santos, Noemi Aguiar Silva (Federal University of São Paulo)

6/9/26, 3:34 PM

Dosimetry and radiation protection in medicine and biology

Poster

In
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...

59. Experimental Fetal Dose Estimation in Pregnant Patients Undergoing Radiotherapy with Modern Techniques and fetal shielding.

GUMERSINDO JESUS VERDU MARTIN (Universitat Politecnica de Valencia)

6/9/26, 3:36 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

86. Development of a new dosimetric system for portable X-ray equipment.

Maria da Penha Potiens (Instituto de Pesquisas Energéticas e Nucleares)

6/9/26, 3:38 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

84. Assessing Patient Exposure in PET/CT scans: A Head and Neck Dose Parameter Study

Dr. Ahmed Alanazi (Northern Border University)

6/9/26, 3:40 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

76. Dosimetric Impact of Varying Regional Nodal Irradiation Extents in Synchronous Bilateral Breast Cancer Using Hypofractionated VMAT

Prof. Lu-Han Lai (Department of Medical Imaging and Radiological Technology, Yuanpei University of Medical Technology, Hsinchu, TAIWAN)

6/9/26, 3:42 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

78. Comparative study of the interaction between electron and photon beams in nPAG dosimeter

Dr Leandro Mariano (Federal Institute of Parana), Anna Luiza Malthez (Federal University of Technology – Paraná)

6/9/26, 3:44 PM

Dosimetry and radiation protection in medicine and biology

Poster

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....

64. Dosimetric Characterization of Small and Narrow Electron Beam Cutout Fields in Keloid and Breast Scar Boost Radiotherapy

Yu Fang Lin

6/9/26, 3:46 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

61. Investigation of the OSL Mechanisms and Dosimetric Properties of MgLiPO₄:Ti

Ms Anna Zampieri (Federal University of São Paulo), Dr sonia tatumi (Federal University of São Paulo)

6/9/26, 3:48 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

88. Impact of Air Gaps on Dose Distribution in Gynecological Brachytherapy Using Monte Carlo Simulation

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

Dosimetry and radiation protection in medicine and biology

Poster

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...

89. Monte Carlo Evaluation of Scalp Dose in Whole Brain Radiotherapy

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

Dosimetry and radiation protection in medicine and biology

Poster

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...

93. Comparison of dosimetric differences between brachytherapy and teletherapy in tongue cancer: a Monte Carlo simulation approach

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

Dosimetry and radiation protection in medicine and biology

Poster

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...

92. Numerical Dosimetric Evaluation of a Hepatic Radioembolization Procedure for Hepatocellular Carcinoma

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

Dosimetry and radiation protection in medicine and biology

Poster

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...

91. Dosimetric Impact of Breast Tissue Expanders in Post-Mastectomy Radiotherapy Treatments

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

Dosimetry and radiation protection in medicine and biology

Poster

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...

99. Comparative Analysis of Monte Carlo-Based Approaches for Neutron Ambient Dose Equivalent Estimation in a Proton Therapy Facility

Adrián Díaz Comeche (Universitat Politècnica de València)

6/9/26, 4:00 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

105. Estimation of Patient effective dose, breast dose and cancer risk during Cardiac CT examinations

Prof. Abdelmoneim Sulieman (King Faisal Specialist Hospital and Research Center)

6/9/26, 4:02 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

108. Scattered Radiation in Orthopedic Fluoroscopy: Do Metallic Implants Increase Occupational Exposure?

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

Dosimetry and radiation protection in medicine and biology

Poster

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...

115. Cumulative Ionizing Radiation Exposure from Chest Computed Tomography in a Health Microregion (2018–2022).

Dr Leticia França Fiuza Bacelar Bacelar, Dr Maria da Penha Albuquerque Potiens

6/9/26, 4:06 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

151. Imaging Performance and Radiation Dose of Different Breast Implant Brands

Yu Chieh Lin (Chang Gung Memorial Hospital at Linkou, Taiwan)

6/9/26, 4:08 PM

Dosimetry and radiation protection in medicine and biology

Poster

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.
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...

147. Computational Phantom of the Vertebral Column for Beta-Source Dosimetry

Mrs Ana Laura Burin (IPEN/USP)

6/9/26, 4:10 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

136. Impact of Angulation and Focus Distance on Depth-Specific Radiation Dose: A Comparative Study of Machine Output and TLD Measurements

Ping-Jung Hsieh (New Taipei Municipal Tucheng Hospital (Chang Gung Medical Foundation), Taiwan)

6/9/26, 4:12 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

142. Dosimetric Comparison of Single-Field and Two-Field BNCT Treatment Planning for Large-Volume Oral Cavity Cancer

Ms Yu-Hsuan Chen (Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan)

6/9/26, 4:14 PM

Dosimetry and radiation protection in medicine and biology

Poster

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)...

140. Patient Radiation Dose Assessment During Percutaneous Coronary Intervention

Abdullah Almujally (Biomedical Physics Department, King Faisal Specialist Hospital and Research Center)

6/9/26, 4:16 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

134. Improved WEPL Accuracy in Discrete Range Modulation Proton Radiography for Head-and-Neck Imaging Using a 3D CNN

Tsz-Yui Chan (Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University)

6/9/26, 4:18 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

123. Application of Texture Analysis in Mammograms for Accurate Detection and Classification of Breast Calcifications

Dr Amjad ALYAHYAWI (Diagnostic Radiology Department, College of Applied Medical Sciences, University of Hail,Hail.)

6/9/26, 4:20 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

214. FLASH–DOSE: Dosimetry for FLASH radiotherapy (European Partnership on Metrology Project)

Jacco de Pooter

6/9/26, 4:22 PM

Dosimetry and radiation protection in medicine and biology

Poster

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,...

172. Effect of Blood Boron Concentration on Dose Distribution and Irradiation Time in Two-Field BNCT Planning for Large-Volume Oral Cavity Cancer

Ms Yu-Hsuan Chen (Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan)

6/9/26, 4:24 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

168. Dose Optimization in Pediatric Conventional Radiography

Hugo Schelin (Federal University of Technology - Parana)

6/9/26, 4:26 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

170. Dosimetric validation of LINAC treatment planning systems in the presence of barium sulfate contrast using Monte Carlo simulations and measurements

Kwo-Ping Chang (Department of Medical Imaging and Radiological Sciences, Tzu-Chi University, Taiwan.)

6/9/26, 4:28 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

12. Comparative Evaluation of Four Shielding Verification Methods for Diagnostic X-Ray Rooms in hospital.

Ms Rasil Almuhanna (Princess Nourah bint Abdulrahman University), Ms renad alsulaiman (Princess Nourah bint Abdulrahman University)

6/9/26, 4:30 PM

Dosimetry and radiation protection in medicine and biology

Poster

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...

203. Effect of radiation on the luminescent properties of cerium-doped strontium borate (Sr₃B₂O₆:Ce): A study of dosimetric properties

Dr JESSICA MOSQUEIRA-YAURI (UNSA)

6/10/26, 3:30 PM

Environmental dosimetry and monitoring

Poster

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
$^2$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. ...

102. Evaluation of Cumulative Occupational Exposure and Biological Effects for Cyclotron Workers

Abdelmoneim Sulieman (Biomedical Physics Department, King Faisal Specialist Hospital and Research Center)

6/10/26, 3:32 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

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...

198. Industry-Graded Reactor Pressure Vessel Calculation Scheme: Methodology and Benchmarking

Ana Jambrina (VTT Technical Research Centre of Finland Ltd)

6/10/26, 3:34 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

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...

209. Results of the impact of the Temelín NPP monitoring on the environment within a distance of 20 km in the time horizon of 25 years

Jaroslav Klusoň (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)

6/10/26, 3:36 PM

Environmental dosimetry and monitoring

Poster

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...

213. Estimation of the influence of beaver constructions on environmental contamination in the area of the former Zadní Chodov uranium mine

Václav Štěpán (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)

6/10/26, 3:38 PM

Environmental dosimetry and monitoring

Poster

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...

56. Characterization and Validation of Dose-Rate Meters for Pulsed Radiation Fields

Ms Christina Antoniadou (ELI Beamlines, ELI ERIC)

6/10/26, 3:40 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

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...

212. Radiation protection in the underground radon worplace – Bozkov dolomite caves, case study

Václav Štěpán (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)

6/10/26, 3:42 PM

Environmental dosimetry and monitoring

Poster

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...

45. Identification and localization of uranium in swipe samples with X-ray fluorescence scanning

Tomáš Trojek (Czech Technical University in Prague)

6/10/26, 3:44 PM

Environmental dosimetry and monitoring

Poster

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...

40. High risk of natural radioactivity: two examples from Slovakia

Andrej Mojzeš (Comenius University in Bratislava)

6/10/26, 3:46 PM

Environmental dosimetry and monitoring

Poster

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...

166. Experimental study and modelling of radon transfer velocity coefficient between water and air phases

Cristina Trull-Hernandis (Universitat Politècnica de València)

6/10/26, 3:48 PM

Environmental dosimetry and monitoring

Poster

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...

41. Development and Metrological Validation of a Low-Dose-Rate Co-60 Calibration System for Environmental Radiation Monitoring based on Spectral Characterization and Spatial Uniformity Assessment

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

Environmental dosimetry and monitoring

Poster

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...

52. HPGe Response to Incremental Lead Shielding for Low- and High-Energy Gamma Rays at the KATANA Activated-Water Loop

Domen Govekar (Jožef Stefan Institute)

6/10/26, 3:52 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

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,...

158. Assessment of Radon Concentrations in Residential Environments in Carambeí and Curitiba, Paraná, Brazil

Hugo Schelin (Federal University of Technology - Parana)

6/10/26, 3:54 PM

Environmental dosimetry and monitoring

Poster

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...

117. Experimental Assessment of Radon and Radon Progeny Behavior in Relation to Face Mask Use under Controlled Aerosol Conditions

Aina Noverques Medina, Cristina Trull-Hernandis (Universitat Politècnica de València)

6/10/26, 3:56 PM

Environmental dosimetry and monitoring

Poster

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...

110. Data driven selection of representative neutron spectra for reference simulated workplace fields using clustering analysis

Sita Gandes Pinasti (SCK CEN / ULB)

6/10/26, 3:58 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

Personal neutron dosimetry in nuclear installations is challenging due to the energy and angle dependence of detector response. When personal dosimeters calibrated in standard reference fields are used in workplace fields with different spectral and angular characteristics, systematic biases in dose estimates can arise. Simulated workplace fields (SWFs) are therefore essential for reproducing...

141. Latest Development and Implementation of an Extended Surface–Deep Soil Transfer Model for Time-Dependent Environmental Dose Assessment

Francesco Teodori (University of bologna)

6/10/26, 4:00 PM

Environmental dosimetry and monitoring

Poster

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...

157. Assessment of Radon Concentration in Well Water, Rocks, and Soil in Carambeí, Paraná, Brazil

Hugo Schelin (Federal University of Technology - Parana)

6/10/26, 4:02 PM

Environmental dosimetry and monitoring

Poster

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...

191. Measurements of Atmospheric Ionizing Radiation Using MOSAIC and LAMA Detectors

Martina Lužová (Nuclear Physics Institute CAS, Řež, Czech Republic)

6/10/26, 4:04 PM

Environmental dosimetry and monitoring

Poster

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...

167. Characterization of Ionizing Radiation Components in High-Voltage Switching Impulse Discharges Using Passive Detectors

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

Environmental dosimetry and monitoring

Poster

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...

159. Spatial Prediction of Radon Exhalation Hotspots in Permeable Waste Rock Dumps using Convolutional Neural Networks

Martin Kaschner (KDAIZ, FJFI, ČVUT v Praze)

6/10/26, 4:08 PM

Environmental dosimetry and monitoring

Poster

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...

43. Radon measurement in Slovak kindergartens and dose assessment from radon passive detectors

Monika Müllerová (Fakulta matematiky, fyziky a informatiky, Univerzita Komenského v Bratislave)

6/10/26, 4:10 PM

Environmental dosimetry and monitoring

Poster

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...

34. Cesium-137 in ferns in Czech coniferous forests and its relation to the stable cesium

Mr Václav Procházka

6/10/26, 4:12 PM

Environmental dosimetry and monitoring

Poster

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...

47. Development of a Beam Evaluation Framework for the Preparation of a 30–70 MeV Proton Irradiation Facility

Yu-Tien Tsai (National Atomic Research Institute)

6/10/26, 4:14 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

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...

75. Study of natural radioactivity levels in soils of citrus fields in the Valencian region and the impact of flooding

Dr Eva Doménech (Universitat Politecnica de Valencia. Food UPV)

6/10/26, 4:16 PM

Environmental dosimetry and monitoring

Poster

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,...

82. Experimental dose rate measurements in a synchrotron-based X-ray tomography using commercial OSL detectors

Anna Luiza Malthez (Federal University of Technology – Paraná)

6/10/26, 4:18 PM

Dosimetry and radiation protection in nuclear installations and at accelerators

Poster

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...

210. Anomalies in radon concentration time series in caves as indicators of tectonic activity: overview and comparison of mathematical modeling approaches

Ondřej Kořistka

6/10/26, 4:20 PM

Environmental dosimetry and monitoring

Poster

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...

221. Gamma radiation field modelling in geological profiles: dedicated app development

Joanna Rocznik (Silesian University of Technology)

6/10/26, 4:22 PM

Environmental dosimetry and monitoring

Poster

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...

180. GASTRON Event Catalogue: Multi-Site Characterization of Thunderstorm-Related Gamma Radiation in Europe and Japan

Helena Velyčková (Nuclear Physics Institute of the Czech Academy of Sciences)

6/10/26, 4:24 PM

Environmental dosimetry and monitoring

Oral Presentation

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...