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Description
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 using personal dosimetry records. In total, 60 cardiology department personnel including cardiologists, nurses, residents and technologist were monitored over five consecutive years. Personal dose equivalents Hp(10) and Hp(0.07) were extracted to represent whole-body and skin doses, respectively. Lithium fluoride–based thermoluminescent dosimeters (TLD-100) were calibrated using Calibration is performed using a Cs-137 source with an activity of 270 Ci . All chips were readout using Harshaw 6600 TLD reader with WinREMS software. Descriptive statistics were used to summarize dose distributions. Paired comparisons and correlation analyses were performed to assess the relationship between Hp(10) and Hp(0.07). The accumulated five-year doses demonstrated that Hp(0.07) values were consistently higher than Hp(10) (15.36 ± 26.24 ) across staff members. The cumulative effective dose was up to 168 mSv. most individuals received low to moderate cumulative doses, while a small subset exhibited higher exposures, likely reflecting greater involvement in interventional procedures. A strong positive correlation was observed between Hp(10) and Hp(0.07). All recorded doses remained below internationally recommended occupational dose limits. Occupational radiation exposure among cardiology staff over the five-year period was within regulatory limits; however, elevated skin doses emphasize the need for continued optimization, appropriate use of protective equipment, and regular radiation safety training. Ongoing dose monitoring remains essential to support a strong radiation protection culture in cardiology practice.