SPECT/CT工作场所辐射水平测量与分析  

Measurement and Analysis of the Radiation Level in the SPECT/CT Workplaces

作　　者：何宗喜[1] 吴雪梅 游金辉[1] 李素平[1] 吴晓华[1] 阳建华[3] 

机构地区：[1]川北医学院附属医院核医学科,四川南充637000 [2]南充市环境监测中心站,四川南充637000 [3]川北医学院附属医院设备科,四川南充637000

出　　处：《中国医疗设备》2015年第4期98-100,114,共4页China Medical Devices

摘　　要：目的通过测量本院SPECT/CT工作场所的辐射水平,了解目前相关场所的辐射防护状况。方法采用辐射报警监测仪对本院SPECT/CT工作场所进行γ辐射剂量率和表面污染现场检测。结果 SPECT/CT工作场所活性室区域的γ辐射剂量率相对较高,其中注射台面最高达2.72μSv/h,超净化工作台面最高达2.52μSv/h,登记操作台最高达2.21μSv/h,废物桶四周最高达2.13μSv/h。SPECT/CT工作场所的表面污染值未超过国家标准限值,但其活性室区域的表面污染相对本底值较高,即活性室区域表面污染清理还不够及时、彻底,导致此区域表面污染值和γ辐射剂量率明显高于其本底值。结论本院SPECT/CT工作场所辐射防护水平符合国家标准要求,辐射防护重点区域为活性室。Objective To measure the radiation level of SPECT/CT （Single-Photon Emission Computed Tomography/Computed Tomography） workplaces in the Afifliated Hospital of North Sichuan Medical College so as to investigate the radiation protection conditions of the corresponding workplace. Methods The Radiation Alert Inspector was used to detect the Gamma-Ray radiation dose rate and surface contamination. Results This testings showed that both the Gamma-Ray radiation dose rate and surface contamination in the activity room were obviously higher than their background. The maximum rate of injection room desk surface was up to 2.72μSv/h;the super-purgative working table surface was 2.52μSv/h;the registration desk surface was 2.21μSv/h;and the value around the waste barrel was 2.13μSv/h. The surface contamination in the SPECT/CT workplace did not exceed the national standard, but the surface contamination and the Gamma-Ray radiation dose rate in the activity room were far beyond those of its background. Conclusion The radiation protection level in the SPECT/CT workplaces in the hospital was qualiifed according to the national standards. And the focus of radiation protection should be given to the workplace of the activity room.

关 键 词：活性室 Γ辐射剂量率 表面污染 辐射防护 

分 类 号：TH774[机械工程—仪器科学与技术]