Volume 18, Issue 4 (3-2026)
ijhe 2026, 18(4): 685-700 |
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Samieifard A, Bahojb Moqanian A, Ranjbaran M, Karyab H. Assessment and evaluation of leakage ionizing dose from radiation medicine centers of Qazvin province. ijhe 2026; 18 (4) :685-700
URL: http://ijhe.tums.ac.ir/article-1-7108-en.html
URL: http://ijhe.tums.ac.ir/article-1-7108-en.html
1- Department of Environmental Health Engineering, School of Public Health, Qazvin University of Medical Sciences, Qazvin, Iran
2- Department of Environmental Health, Health Deputy, Qazvin University of Medical Sciences, Qazvin, Iran
3- Non-Communicable Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
4- Social Determinants of Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran ,hkaryab@qums.ac.ir
2- Department of Environmental Health, Health Deputy, Qazvin University of Medical Sciences, Qazvin, Iran
3- Non-Communicable Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
4- Social Determinants of Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran ,
Abstract: (54 Views)
Background and Objective: Measuring leakage radiation dose in radiology centers is essential for protecting public health. This study aimed to assess the exposure levels of radiation workers (in controlled areas) and visitors (in supervised areas) to ionizing radiation in radiology centers of Qazvin Province.
Materials and Methods: This descriptive cross-sectional study was conducted as a census in 79 radiology centers across Qazvin Province. Leakage dose was measured using a FLUKE 451B ionization chamber and reported in μSv/h. Using the U.S. Radiological Protection Commission model, exposure in controlled and supervised areas was estimated in mSv/year. Finally, Monte Carlo simulation was applied to analyze the probabilistic distribution of exposure for workers and visitors.
Results: The mean leakage dose in controlled and supervised areas was 0.1–1.7 μSv/h and 0.1–2.19 μSv/h, respectively. The mean exposure dose for radiation workers and visitors was estimated at 0.1755± 0.3079 mSv/year and 6.2 ±14.9×10⁻⁵ mSv/year, respectively, which showed a statistically significant difference (p< 0.0001). Based on Monte Carlo simulation results, 93 percent of exposure for workers fell within 0.0–0.98 mSv/year, and 95% of exposure for visitors fell within 0.0–0.01 mSv/year.
Conclusion: The findings indicate that leakage doses in radiology centers of Qazvin Province are within permissible limits. However, the detection of elevated ionizing radiation leakage in CT angiography and nuclear medicine departments underscores the need for continuous monitoring and adherence to the ALARA principle. Although the study has a cross-sectional design, its results may serve as a basis for developing national radiation safety policies.
Materials and Methods: This descriptive cross-sectional study was conducted as a census in 79 radiology centers across Qazvin Province. Leakage dose was measured using a FLUKE 451B ionization chamber and reported in μSv/h. Using the U.S. Radiological Protection Commission model, exposure in controlled and supervised areas was estimated in mSv/year. Finally, Monte Carlo simulation was applied to analyze the probabilistic distribution of exposure for workers and visitors.
Results: The mean leakage dose in controlled and supervised areas was 0.1–1.7 μSv/h and 0.1–2.19 μSv/h, respectively. The mean exposure dose for radiation workers and visitors was estimated at 0.1755± 0.3079 mSv/year and 6.2 ±14.9×10⁻⁵ mSv/year, respectively, which showed a statistically significant difference (p< 0.0001). Based on Monte Carlo simulation results, 93 percent of exposure for workers fell within 0.0–0.98 mSv/year, and 95% of exposure for visitors fell within 0.0–0.01 mSv/year.
Conclusion: The findings indicate that leakage doses in radiology centers of Qazvin Province are within permissible limits. However, the detection of elevated ionizing radiation leakage in CT angiography and nuclear medicine departments underscores the need for continuous monitoring and adherence to the ALARA principle. Although the study has a cross-sectional design, its results may serve as a basis for developing national radiation safety policies.
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