某医院放射工作人员职业性外照射个人剂量监测结果分析

Analysis of personal dose monitoring results of occupational external exposure for radiation workers in a hospital

目的了解某三级综合医院放射工作人员职业性外照射个人剂量水平,为放射防护工作提供参考。方法于2023年5月,收集2018至2022年该医院所有放射工作人员个人剂量监测数据,分析和评价其职业性外照射接触水平。按照职业类别将放射工作人员分为放射诊断、放射治疗、介入放射和核医学。结果2018至2022年共监测1626人次,人均年有效剂量(0.13~0.36 mSV)低于国家限值(20 mSv),核医学放射工作人员人均年有效剂量最高(0.36 mSv),介入放射工作人员较低(0.13 mSv)。2020年人均年有效剂量最高(0.24 mSv)。结论该医院放射工作人员人均年有效剂量低于国家标准,仍需加强对放射工作人员个人剂量计佩戴及防护用品使用情况的检查力度。

ObjectiveTo analyze and understand the level of occupational external radiation personal dose of radiation workers in a hospital,and provide a reference for radiation protection.MethodsIn May 2023,the personal dose monitoring data of all radiation workers in the hospital from 2018 to 2022 were collected,and their occupational external radiation exposure levels were analyzed and evaluated.All radiation workers were divided into radiation diagnosis,radiotherapy,interventional radiology,and nuclear medicine according to their occupational categories.ResultsA total of 1626 person-times were monitored from 2018 to 2022,and the average annual effective dose per person(0.13-0.36 mSV)was lower than the national limit of 20 mSv.The average annual dose of nuclear medicine was the highest(0.36 mSv),and interventional radiology was lower(0.13 mSv).The average annual dose of individuals was the highest in 2020(0.24 mSv).ConclusionThe average annual effective dose per person of radiation workers in this hospital is lower than the national standard,and it is still necessary to strengthen the inspection of the wearing of personal dosimeters and the using of protective equipment for radiation workers.