云浮市2013—2018年放射工作人员个人剂量监测结果分析

目的 对云浮市放射工作人员个人剂量监测结果进行分析与评价，为监管部门和放射工作单位制定相关管理措施提供参考。方法 采用热释光个人剂量测量方法对放射工作人员进行个人剂量监测，收集和分析2013—2018年云浮市个人剂量监测结果。结果 2013—2018年云浮市共有2043人次放射工作人员进行了职业外照射个人剂量监测，总体监测率为95.7%，人均年有效剂量为0.28 mSv/a。介入放射学和核医学工种人均年有效剂量较高，分别为0.33 mSv/a和0.32 mSv/a，不同工种间比较，差异有统计学意义（P < 0.05）。不同等级单位放射工作人员人均年有效剂量值不同，其中乡镇级单位最高，为0.35 mSv/a，厂矿企业最低，为0.22 mSv/a，差异有统计学意义（P < 0.05）。结论 2013—2018年云浮市放射工作人员个人剂量监测结果符合国家卫生标准，但应加强介入放射学和核医学工作岗位、乡镇级放射工作单位放射工作人员的监管和培训。

Analysis of individual dose monitoring results of radiation workers in Yunfu City from 2013 to 2018

Objective To analyze and evaluate the results of personal dose monitoring of radiation workers in Yunfu City to provide reference for the regulatory authorities and radiation work units in formulating relevant management measures. Methods Detected the individual doses of medical radiation workers by thermoluminescence measuring method and analyzed the results of individual dose monitoring in Yunfu City from 2013 to 2018. Results From 2013 to 2018, a total of 2043 radiation workers in Yunfu City conducted personal dose monitoring for occupational external exposure, with an overall monitoring rate of 95.7% and an annual effective dose per capita of 0.28 mSv/a. Interventional radiology and nuclear medicine workers had a higher annual effective dose per capita of 0.33 mSv/a and 0.32 mSv/a, respectively, with statistically significant differences between the different types of workers (P < 0.05). The annual effective dose per capita of radiology staff varies among the level of the unit, with the highest value (0.35 mSv/a) in township-level units and the lowest value (0.22 mSv/a) in mining enterprises, with a statistically significant difference (P < 0.05). Conclusion The average annual individual effective dose of radiation staffs in Yunfu from 2013 to 2018 are in line with national health standards, It is recommended that the supervision and training of radiation workers in positions of interventional radiology, nuclear medicine and township level units should be strengthened.