摘要
目的了解广州市医用放射工作人员外照射个人剂量情况。方法采用方便抽样方法,以2008—2014年委托广东省职业病防治院进行个人剂量监测的广州市医用放射工作人员为调查对象,分析其监测数据。结果 7年共监测17 754人次,年集体有效剂量为10 621.1人·mSv,人均年有效剂量中位数为0.21 mSv/a。2008—2012年间人均年有效剂量呈逐年增高趋势(P<0.05),至2012年达到高峰,其后于2013、2014年呈逐年下降趋势(P<0.05)。二级医疗机构放射工作人员人均年有效剂量分别高于三级、一级及以下医疗机构(P<0.01),三级医疗机构放射工作人员人均年有效剂量高于一级及以下医疗机构(P<0.01)。2008—2014年每年监测了4个周期的放射工作人员有效监测率随年份的增加而增加(P<0.01);有效监测率随医院级别的升高而升高(P<0.01)。放射诊断学工作人员人均年有效剂量分别低于临床核医学、放射治疗学和介入放射学(P<0.01)。结论广州市医用放射工作人员的受照剂量在国家标准限值内,但仍应重点关注二级医院、临床核医学、放射治疗学和介入放射学放射工作人员的防护。
Objective To investigate the individual external dose level of medical radiation staffs in Guangzhou City.Methods The medical radiation staffs of Guangzhou City who conducted individual dose monitoring at Guangdong Province Hospital Center for Occupational Diseases Prevention and Treatment from 2008 to 2014 were selected as study subjects by convenient sampling method.Their individual dosage monitoring data were analyzed.Results A total of 17 754 person-times were monitored in 7 years.The annual collective effective dose was 10 621.1 person·mSv and the median per capita annual effective dose was 0.21 mSv/a.The per capita annual effective dose in 2008-2012 showed an increasing trend each year（ P〈0.05）,peaked in 2012,and then decreased in 2013 and 2014（ P〈0.05）.The per capita annual effective dose of radiology staffs in level Ⅱ medical institutions was higher than that of level Ⅲ medical institutions,level Ⅰ medical institutions and those below level Ⅰ（ P〈0.01）.The per capita annual effective dose of radiation staffs in level Ⅲ medical institutions was higher than level Ⅰ medical institutions and those below level Ⅰ（ P〈0.01）.The effective monitoring rates of radiation staffs monitored for 4 cycles every year increased with time from 2008 to 2014（ P〈0.01）.The effective monitoring rate increased with the hospital level（ P〈0.01）.The per capita annual effective dose of the staffs in radiological diagnosis department was lower than that of clinical nuclear medicine,radiotherapy and interventional radiology（ P〈0.01）.Conclusion The radiation dose of medical radiation staffs in Guangzhou City was within the national standard limit.Protection should be focused on the the staffs in secondary hospitals,clinical nuclear medicine,radiotherapy and interventional radiology.
作者
曾飞飞
李森华
杨晓忠
李旭东
郑倩玲
刘移民
ZENG Feifei;LI Senhua;YANG Xiaozhong;LI Xudong;ZHENG Qianling;LIU Yimin(School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
出处
《中国职业医学》
CAS
北大核心
2018年第3期325-328,共4页
China Occupational Medicine
基金
广东省医学科研基金(A2018502)
广东省“十二五”医学重点专科
广东省职业病防治重点实验室(2017B030314152)
广东省化学中毒与核辐射突发事件医学救援应急技术研究中心(2012A032100002)
广州市民生科技重大项目(2014Y2-00067)
广州市职业环境与健康效应实验室建设项目(2014SY000020)
关键词
放射工作人员
外照射
个人剂量
年集体有效剂量
人均年有效剂量
Radiation worker
External exposure
Individual dose
Annual effective dose
Per capita annual effective dose
作者简介
曾飞飞（1985-），女，在读劳动卫生与环境卫生学硕士研究生，主管医师，主要从事实验室质量管理工作;通讯作者：刘移民教授，主任医师，E—mail：ymliu61@163．com
