钱爱君, 温学新, 高林峰, 姚杰. 20152019年上海市部分医疗机构放射工作人员个人剂量监测结果分析[J]. 上海预防医学, 2022, 34(7): 634-637. DOI: 10.19428/j.cnki.sjpm.2022.21807
引用本文: 钱爱君, 温学新, 高林峰, 姚杰. 20152019年上海市部分医疗机构放射工作人员个人剂量监测结果分析[J]. 上海预防医学, 2022, 34(7): 634-637. DOI: 10.19428/j.cnki.sjpm.2022.21807
QIAN Aijun, WEN Xuexin, GAO Linfeng, YAO Jie. Monitoring on individual dose among radiation workers in medical institutions in Shanghai from 2015 to 2019[J]. Shanghai Journal of Preventive Medicine, 2022, 34(7): 634-637. DOI: 10.19428/j.cnki.sjpm.2022.21807
Citation: QIAN Aijun, WEN Xuexin, GAO Linfeng, YAO Jie. Monitoring on individual dose among radiation workers in medical institutions in Shanghai from 2015 to 2019[J]. Shanghai Journal of Preventive Medicine, 2022, 34(7): 634-637. DOI: 10.19428/j.cnki.sjpm.2022.21807

20152019年上海市部分医疗机构放射工作人员个人剂量监测结果分析

Monitoring on individual dose among radiation workers in medical institutions in Shanghai from 2015 to 2019

  • 摘要:
    目的 分析上海市放射工作人员职业性外照射个人剂量水平及变化趋势,为放射工作人员健康风险评估提供依据。
    方法 从国家卫健委放射工作人员职业健康管理系统⁃外照射个人监测管理子系统中导出上海市2015—2019年所有医学应用放射工作人员共38 077人外照射个人剂量监测结果,采用分层整群抽样方法,选取部分医疗机构(包含三级、二级、一级医院)共11 370名放射工作人员为调查对象,使用SPSS 22.0软件进行统计分析。
    结果 11 370名放射工作人员集体年有效剂量为4.340人·Sv,其中诊断放射学和介入放射学分别为2.270、1.112 人·mSv,其余职业类别集体有效剂量均<0.5 人·mSv;人均年有效剂量为0.382 mSv,其中核医学和放射治疗人均年有效剂量分别为0.482、0.431 mSv,其余职业类别均<0.5 mSv;人均年有效剂量6人(占0.05%)>5 mSv;10 453人(占92%)<1 mSv; 911人(占8.0%)年剂量介于1~5 mSv之间,所有人员人均年有效剂量均<20 mSv。不同年份人均年有效剂量间差异有统计学意义(F=161.1,P<0.01),不同职业类别人均年有效剂量间差异有统计学意义(F=13.5,P<0.01),不同医院等级人均年有效剂量之间差异有统计学意义(F=264.5,P<0.01)。
    结论 上海市医疗机构放射工作人员人均年有效剂量低于国家标准限值要求,医疗机构的放射防护制度和措施较完善。

     

    Abstract:
    Objective To determine the individual dose level and changing trend in the occupational external exposure of radiation workers in Shanghai, and provide scientific evidence for health risk assessment for radiation workers.
    Methods In the Occupational Health Management System for Radiation Workers of the National Health Commission-External Exposure Personal Monitoring and Management Subsystem, we retrieved the monitoring data of 38 077 external exposure individual dose of all medical radiation workers in Shanghai from 2015 to 2019. Using clustered sampling method, a total of 11 370 radiation workers in medical institutions (including tertiary, secondary, and primary hospitals) were selected in the study. Statistical analyses were conducted using SPSS 22.0.
    Results The collective annual effective dose of 11 370 radiation workers was determined to be 4.340 person Sv, including 2.270 man·mSv in diagnostic radiology, 1.112 man·mSv in interventional radiology, and <0.5 man·mSv in other categories. The average annual effective dose was 0.382 mSv, which was 0.482 mSv in nuclear medicine, 0.431 mSv in radiotherapy, and <0.5 mSv in other categories. Moreover, the average annual effective dose of 6 workers (0.05%) was higher than 5 mSv, whereas that of 10 453 workers (92%) were less than 1 mSv; in addition, the annual dose of 911 workers (8.0%) was between 1‒5 mSv. All workers had average annual effctive dose lower than 20 mSv. The annual effective dose differed significantly by years (F=161.1, P<0.01), by occupational groups (F=13.5, P<0.01), and by hospital levels (F=264.5, P<0.01).
    Conclusion The average annual effective dose of radiation workers in medical institutions in Shanghai is lower than the national standard limit, suggesting proper and adequate radiation protection system and measures in medical institutions.

     

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