2010-2016年乌鲁木齐市某三甲医院职业外照射个人剂量监测结果分析

目的 调查2010-2016年乌鲁木齐市某三甲医院放射工作人员职业性外照射个人剂量监测水平,分析不同职业类别工作人员的剂量分布情况。方法 按照《职业性外照射个人监测规范》（GBZ 128-2016）的方法,采用热释光个人剂量测量方法对该院放射工作人员进行职业性外照射个人监测,并对2010-2016年监测结果进行统计分析。结果 2010-2016年乌鲁木齐市某三甲医院的放射工作人员人均年有效剂量分别为：1.02、1.02、1.01、0.56、0.32、0.39、0.41 mSv,7年平均剂量为0.56 mSv;7年间监测人数不断增加,人均年有效剂量呈下降趋势,并在一个水平相对稳定。结论 该院放射工作人员职业性外照射人均年有效剂量均在国家标准规定的个人剂量限值之内,放射工作人员的工作环境是安全的。但核医学和介入放射学剂量应是控制的重点。

Analysis of the individual occupational external exposure monitoring results of a tertiary hospital in Urumqi 2010-2016

Objective This paper gives an overview of spread of occupational external exposure for monitoring individual by analyzing the exposure dosage of medical personnel within radiology department of a tertiary hospital in the city of Urumqi from 2010 to 2016.Methods Under the regulation of "Specifications of individual monitoring for occupational external exposure"(GBZ 128-2016), LiF(Mg, Cu, P) thermoluminescent dosimetry(TLD) is applied for the results and data analysis.Results From 2010 to 2016, the per capita annual effective doses of radiation workers in a top three hospital in Urumqi were:1.02 mSv 1.02 mSv 1.01 mSv 0.56 mSv 0.32 mSv 0.39 mSv 0.41 mSv and the 7-years average dose was 0.56 mSv. The number of monitoring individuals increased during the seven year period, the annual effective amount per capita, however, appears to be in a downward trend and a relatively stable level.Conclusion The medical personnel in a tertiary hospital, Urumqi have safety working environment as their annual effective dose per capita is in compliance with national standard. Nonetheless, nuclear medicine and interventional radiography should have the priority in exposure control.