Abstract:
Background Interventional surgery brings both beneficial and detrimental health effects, and its radiation protection safety has always been the focus and hot spot of radiation health research. Because China's practice of interventional radiology has a late start, there are many radiation protection problems.
Objective This paper investigates the current status of interventional radiological protection and the individual dose of interventional radiology workers in 15 hospitals in Hubei Province, aiming to improve the protection level of interventional radiology workplaces and reduce the individual dose of interventional radiology workers.
Methods Using stratified random and cluster sampling method, 15 hospitals in 6 cities of Hubei Province were selected to evaluate the dose equivalent rate around interventional radiation workplaces and the air kerma rate in perspective protection zones. Individual doses were monitored with thermoluminescent dosimeter system and compared among groups of different types of work.
Results The dose equivalent rate outside the radiation rooms of 15 selected medical institutions was 0.11-1.12 μSv/h. The first operator in the perspective protection zone had an air kerma rate of 2.9-399.6μGy/h, and the second operator had an air kerma rate of 2.9-395.0μGy/h. The annual effective dose in M (P25, P75) of 1054 radiation workers in the 15 medical institutions was 0.130 (0.080, 0.200) mSv/year, and the type-of-work specific doses of interventional radiology workers was 0.131 (0.082, 0.213) mSv/year, that of radiological diagnosis workers was 0.129 (0.070, 0.200) mSv/year, that of nuclear medicine workers was 0.100 (0.050, 0.150) mSv/year, that of radiotherapy workers was 0.140 (0.070, 0.240) mSv/year, and that of others were 0.145 (0.048, 0.200) mSv/year.
Conclusion The protection level of interventional radiology workplaces in selected 15 medical institutions in Hubei Province meet the requirements of the national standards; however, the annual effective dose of interventional radiology workers is higher than the values of the radiological diagnosis workers and nuclear medicine workers. Thus, the interventional radiology workers need strengthened protective measures to reduce individual exposure to radiation.
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