Analysis of personal dose monitoring results for radiation workers in medical institutions in Huizhou,China,2019-2023
Objective To understand the levels and trends of personal doses of occupational external exposure among ra-diation workers in medical institutions in Huizhou City and to improve radiation protection management.Methods Ther-moluminescent dosimetry was employed to monitor the personal doses of occupational external exposure of radiation work-ers over monitoring cycles spanning three months each.Results From 2019 to 2023,a total of 25 796 monitoring in-stances were recorded for radiation workers in medical institutions in Huizhou City.Diagnostic radiology workers accounted for the largest proportion of workforce in the occupational categories,followed by interventional radiology workers.The av-erage annual effective dose per person ranged from 0.21 to 0.30 mSv,with an average of 0.26 mSv.The majority of annual effective dose per person was below 1.0 mSv,with no instances exceeding 20 mSv.Among all occupational categories,nuc-lear medicine workers had the highest average annual effective dose per person at 0.43 mSv,followed by interventional radi-ology workers at 0.37 mSv.There was a significant difference in the average annual effective dose per person among differ-ent occupational categories(P<0.05),with nuclear medicine and interventional radiology workers having higher doses than workers in diagnostic radiology,dental radiology,and other applications(all P<0.05).Conclusion The personal dose monitoring results for radiation workers in medical institutions in Huizhou City are at low levels,indicating that the radi-ation protection in the local medical institutions is sufficient and can effectively protect the occupational health of radiation workers.
Personal dose monitoringMedical institutionRadiation workerOccupational external exposure
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