PET/CT施行^(18)F-FDG的受检者对周围人员的辐射影响  

Radiation to People around Patients Undergoing PET/CT Examination with ^(18)F-FDG

作　　者：王风 赵伟 范洋 陈菩芸 张岩 杨志 

机构地区：[1]北京大学肿瘤医院 [2]北京市肿瘤防治研究所核医学科恶性肿瘤发病机制及转化研究教育部重点实验室,北京100036

出　　处：《环境与职业医学》2015年第8期771-773,778,共4页Journal of Environmental and Occupational Medicine

基　　金：国家自然科学基金(编号:81172083)

摘　　要：[目的]计算PET/CT施行18F-FDG的受检者对周围人员(问诊医师、主治医师、亲属或陪护人员)产生的辐射剂量,以全身有效剂量表征周围人员受到的辐射大小。[方法]使用蒙特卡罗方法建立参考人体模型和辐射模型,将周围人员分组模拟计算得到身体各个器官的当量剂量,而后代入组织权重因子计算全身有效剂量,将计算结果与国家规定的剂量限值进行比较,分析辐射对周围人员的影响。[结果]问诊医师、主治医师、亲属或陪护人员受到的年有效剂量分别为0.55 m Sv、8.0×10-5 m Sv和2.0×10-2 m Sv。周围人员受到的有效剂量远远小于国家规定的工作人员(20 m Sv/a)个人剂量(1 m Sv/a)限值。[结论]PET/CT施行18F-FDG的受检者对周围人员辐射影响很小,几乎可以忽略不计。[ Objective ] To calculate the radiation dose to people including inquiry physicians, attending physicians, and family/nursing personnel who were around the patients undergoing 18F-fluorodeoxyglucose positron emission tomography and computerized tomography （lSF-FDG PET/CT） examination, and estimate the radiation exposure using whole-body effective dose. [ Methods ] A reference phantom model and a radiation model were established by Monte Carlo Method. Based on the derived equivalent doses of each organ by simulation calculation using grouping patient-accompanying personnel data, whole-body effective dose was calculated by adding tissue weighting factor. Obtained results were compared to the national standard norm to evaluate the radiation exposure to patient-accompanying personnel. [ Results ] The average annual effective doses of inquiry physicians, attending physicians, and family/nursing personnel were 0.55, 8.0 ×10-5, and 2.0 × 10-2 mSv, respectively, much lower than the medical staff （20mSv/a） and individual （1 mSv/a） dose limits recommended by national standard norm. [ Conclusion ] The patients ordered 18F-FDG PET/CT examination exert little radiation to their surroundings.

关 键 词：PET/CT 辐射 吸收剂量 有效剂量 18F-氟代脱氧葡萄糖 

分 类 号：R172[医药卫生—妇幼卫生保健]