2015-2019年内蒙古地区部分医学应用放射工作人员职业性外照射个人剂量监测结果与分析

目的 了解、分析2015-2019年内蒙古地区医学应用放射工作人员职业外照射个人剂量水平,为放射工作人员健康管理和辐射防护管理提供数据基础和科学依据.方法 通过国家个人剂量登记系统采集内蒙古地区医学应用放射工作人员个人剂量监测数据,并进行统计与分析.结果 2015-2019年各年度医学应用放射工作人员人均年有效剂量依次...

Analysis of individual dose monitoring results for medical radiation workers from occupational external exposure in Inner Mongolia from 2015 to 2019

Objective To understand and analyze the levels of individual dose to medical radiation workers from occupational external exposure in Inner Mongolia autonomous region from 2015 to 2019, with a view to provide basic scientific data for workers'' health protection and radiation protection management. Methods By using National Individual Dose Registry, the individual dose monitoring result and other related data for medical workers were collected and analyzed. Results The average annual individual doses to medical radiation workers in a time order from 2015 to 2019 were 0.72, 0.87, 0.88, 0.71 and 0.64 mSv, respectively. There were significant differences in the annual effective dose distribution in diagnostic radiology, dental radiology, nuclear medicine, radiotherapy, interventional radiology and other applications (H=466.56,P<0.05 ). The average annual effective doses to workers in interventional radiology and nuclear medicine had not shown significant difference (P>0.05), but significantly higher than those in other occupational categories (Z=19.95, 9.87, 10.10, 12.76,P<0.05). Conclusions The average annual effective dose to medical radiation workers is in accordance with the relevant national standards. The dose values for the radiation workers involved in interventional radiology and nuclear medicine are relatively high, especially for interventional radiology workers and radioactive drug operators. The protection measures should be further improved in radiation protection workplace.