福建省部分PET/CT放射工作人员职业受照剂量分析

Analysis of occupational exposure dose for some workers in PET/CT radiology departments of Fujian

目的分析评估福建省PET/CT放射工作人员的职业受照剂量。方法根据福建省2014-2016年5家PET/CT工作场所周围剂量当量率和放射工作人员个人剂量的监测结果,分析PET/CT放射工作人员职业受照剂量,并与国家标准剂量限值进行比较。结果放射工作人员人均年有效剂量为0. 50 m Sv,所有放射工作人员年有效剂量均低于5 m Sv。从事放射性药物分装、注射和PET/CT同室摆位作业的放射工作人员,在未采取个人防护措施的情况下,手部、头颈部和胸部位置最大年受照剂量估算值分别为549. 0、137. 4、134. 0 m Sv。结论在正常工作条件下,放射工作人员职业受照剂量处于较低水平,符合相关标准要求。未采用有效的个人防护措施时,放射工作人员的职业受照剂量可超过国家标准职业照射限值。

Objective Analysis and evaluation of occupational exposure dose for workers in PET/CT radiology departments of Fujian. Methods According to the monitoring results of ambient dose equivalent rate and personal dose equivalent of radiation works around 5 PET/CT workplaces in Fujian from 2014 to 2016,The occupational exposure doses of PET/CT radiation workers were analyzed and compared with the national standard dose limit. Results The average annual individual effective dose of radiation workers was 0. 50 m Sv,and the annual effective dose of all radiation workers was less than 5 m Sv. Without personal protection measures,the estimated annual maximum radiation doses for hand,head,neck and chest positions of radiation workers engaged in radiopharmaceuticals,injection and PET/CT co-room positioning were 549. 0,137. 4 and 134. 0 m Sv,respectively. Conclusion Under the normal working conditions,the occupational exposure dose of radiation workers is at a low level,which meets the relevant requirements. Without effective personal protective measures,the occupational exposure dose of radiation workers will exceed the national standard on occupational exposure limit.