2009-2012年某军区放射工作人员个人剂量监测结果分析

目的：了解近年来某军区放射工作人员的个人外照射剂量水平和分布，查找薄弱环节，提高防护水平。方法采用热释光方法，对2009-2012年某军区放射工作人员的个人剂量进行监测，并对结果进行统计和分析。结果4年人均年剂量为0．59 mSv，与往年相比有很大降低；不同工种的剂量分布从高到低依次为介入治疗、核医学、放射治疗和放射诊断；介入治疗是集体年剂量的主要贡献者，虽然其人均年剂量有下降趋势，但年剂量超过5 mSv的人数随监测人数的增加而逐年增加。结论某军区大部分放射工作人员的个人剂量水平较低，但仍有部分放射工作者剂量偏高，还需加大监督力度，增强防护意识，改善防护条件。

Analysis of individual doses of radiation workers in one militaty district from 2009 to 2012

Objective To understand the level and distribution of external exposure dose of radiation workers in one militaty district,find the weak links and improve the level of protection .Methods Individual doses of those radiation workers from 2009 to 2012 were measured by thermoluminescence method ,and the results were counted and analyzed .Results The annual effective dose per capita was 0.59 mSv.It was a greatly reduced over the previous years .The dose from high to low was：interventional radiology ,nuclear medicine,radiotherapy and radiological diagnosis workers .Interventional workers were the main contribution to the annual collective dose . Although their annual dose per capita declined ,the number of workers whose annual dose more than 5 mSv increased with the workers be-ing monitored.Conclusion The level of individual dose is low for most radiation workers in one militaty district ,but a few remains high-er.We should intensify supervision of law enforcement ,enhance their consciousness of radiation protection and improve their working con -ditions.