2003—2012年广东省放射治疗和核医学工作人员受照剂量水平分析  

Analysis on external exposure dose level of radiotherapy and nuclear medicine workers in Guangdong province,2003-2012

作　　者：李明芳 张素芬[1] 贾育新[1] 麦维基[1] 刘小莲[1] 杨宇华[1] 丁振华[2] 

机构地区：[1]南方医科大学公共卫生与热带医学学院放射医学系,广东广州510445 [2]广东省职业病防治院,广东省职业病防治重点实验室,510300

出　　处：《中国职业医学》2014年第5期527-529,534,共4页China Occupational Medicine

基　　金：广东省职业病防治重点实验室(2012A061400007);卫生部卫生行业科研专项(201002009)

摘　　要：目的分析2003—2012年广东省放射治疗科和核医学科工作人员的职业性外照射个人剂量。方法采用热释光剂量测量方法对放射工作人员进行个人剂量监测并分析有关数据。结果 10年间共监测5 420人,个人受照剂量<5.00 m Sv/年者占总监测人数的99.87%(5 413/5 420);人均年有效剂量为(0.52±0.11)m Sv/年,随年份的增加其总体呈线性下降趋势(P<0.05);实测年集体有效剂量为2.80人·Sv;年个人有效剂量超过5.00 m Sv的人次数分布比为0.001,集体剂量分布比为0.028。放射治疗科人均年有效剂量为(0.44±0.09)m Sv/年,年集体有效剂量为2.00人·Sv,占集体有效剂量的71.43%。核医学科人均年有效剂量为(0.86±0.17)m Sv/年,年集体有效剂量为0.80人·Sv,占集体有效剂量的28.57%。核医学科人均年有效剂量高于放射治疗科(P<0.05)。结论广东省放射治疗科和核医学科放射工作人员的受照剂量监测结果总体满意,个别工作人员防护意识有待加强。Objective To analyze occupational external exposure dose of radiotherapy and nuclear medicine workers in Guangdong province from 2003 to 2012. Methods Personal doses of the radiological workers were monitored with thermo-luminescence dose measurement and the data were analyzed. Results Totally 5 420 persons were monitored in this 10-year-long period. The rate of individual exposure dose exceeding 5. 00 mSv/a was 99. 87%（5 413/5 420）. The per capita annual effective dose was（0. 52 ± 0. 11）mSv/a,and it showed linear decrease tendency with increasing year over the 10-year-long period（P〈0. 05）. The actual measurement of annual collective effective dose was 2. 80 person·Sv. The distri-bution ratio of annual individual effective dose exceeding 5. 00 mSv was 0. 001,while the distribution ratio of collective dose was 0. 028. Per capita annual effective dose in radiotherapy department was（0. 44 ± 0. 09）mSv/a,annual collective effective dose was 2. 00 person·Sv,accounting for 71. 43% of the collective effective dose. Per capita annual effective dose in nuclear medicine department was（0. 86 ± 0. 17）mSv/a,annual collective effective dose was 0. 80 person·Sv, accounting for 28. 57% of the collective effective dose. Per capita annual effective dose in nuclear medicine department was higher than that in radiotherapy department（P 〈0. 05）. Conclusion The exposure dose of radiotherapy and nuclear medicine workers in Guangdong province was overall satisfactory,some workers should pay attention to strengthen their pro-tection consciousness.

关 键 词：个人剂量监测 外照射 受照剂量 放射治疗 核医学 

分 类 号：R134.2[医药卫生—劳动卫生]