北京地区介入工作人员职业受照剂量调查  

Investigation on occupational exposure of interventional radiology workers in Beijing

作　　者：王宏芳[1] 冯泽臣[1] 俞君[1] 张泓[1] 马永忠[1] 王欢[1] 白斌[1] 韩浚[1] 娄云[1] WANG Hong-fang;FENG Ze-chen;YU Jun;ZHANG Hong;MA Yong-zhong;WANG Huan;BAI Bin;HAN-Jun;LOU Yun(Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013,China)

机构地区：[1]北京市疾病预防控制中心/北京市预防医学研究中心,100013

出　　处：《首都公共卫生》2021年第2期97-100,共4页Capital Journal of Public Health

基　　金：北京市疾病预防控制中心、北京市预防医学研究中心科研培育项目(编号:2019-BJYJ-09)。

摘　　要：目的了解北京地区介入工作人员职业受照剂量水平,分析特殊监测中存在的问题。方法依据北京市职业性放射性疾病监测项目,为北京地区部分医疗机构介入工作人员配发铅衣内、外剂量计和眼晶体剂量计。剂量计类型均为热释光剂量计(thermoluminescent dosimeter,TLD),监测周期为2个月,通过监测铅衣内、外Hp(10)及眼晶体Hp(3)来估算介入工作人员全身有效剂量和眼晶体当量剂量;采用AT1121型X、γ剂量率仪监测日常防护条件下介入术中术1和术2位人员操作位辐射剂量水平,并对剂量结果进行分析。结果连续3年的监测中,监测周期内全身有效剂量最高值为0.92 mSv,眼晶体剂量最高值为4.64 mSv,每批次监测中约有40%的人员铅衣外剂量值低于或等于铅衣内;各操作位点中,剂量率高点位于胸和腹部位置。结论介入工作人员职业受照水平满足国家限值要求;介入术操作中附加防护设施摆放合理,防护用品使用得当,工作人员站位正确;剂量计佩戴中的不舒适及不方便导致不规范佩戴情况较多,需对剂量计外形及监测方法进行改进。Objective To understand the occupational exposure level of interventional radiology workers in Beijing area and analyze the problems in special dose monitoring.Methods According to the Beijing occupational radioactive disease surveillance project to estimate the intervention staff body effective dose and eye crystal equivalent dose.Personal dose equivalent Hp(10)and eye crystal dose equivalent Hp(3)were measured by using thermoluminescent dosimeters(TLD),for some medical institutions in Beijing area intervention staff.The monitoring period was 2 months;AT1121X,γdosimeter was used to monitor the radiation dose level at the operating sites of 1 and 2 people during operation under daily protection condition.The result were analyzed.Results Over the three consecutive years of monitoring,the highest effective dose for the whole body during the monitoring cycle was 0.92 mSv,and the highest dose of the eye lens was 4.64 mSv.About 40%of the monitoring result displied that the dose values of outer lead coat were below or equal to in lead coat.Among the operating sites,the high dose rate was located in the upper chest and abdomen position.Conclusions The occupational exposure level of the intervention staff met the national limit requirements.The additional protective equipment was reasonably placed in the operation of the intervention,the protective equipment was used properly,and the staff station was correct.The discomfort and inconvenience in the wearing of the dosimeter lead to more irregular wearing,so the shape and monitoring method of the dosimeter should be improved.

关 键 词：介入放射学 外照射 有效剂量 眼晶体当量剂量 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]