广东省部分钇-90树脂微球治疗场所辐射水平调查  

An investigation of radiation levels in some yttrium-90 resin microsphere therapy institutions in Guangdong Province,China

作　　者：林怀英 王战勇 邓飞 陈玉娟 吴依妮 LIN Huaiying;WANG Zhanyong;DENG Fei;CHEN Yujuan;WU Yini(Environmental Radiation Monitoring and Nuclear Emergency Response Technical Support Center of Guangdong Province,Guangzhou 510300 China)

机构地区：[1]广东省环境辐射监测与核应急响应技术支持中心,广东广州510300

出　　处：《中国辐射卫生》2024年第5期517-522,共6页Chinese Journal of Radiological Health

摘　　要：目的根据广东省Y-90树脂微球治疗场所调查和检测现状,对Y-90树脂微球治疗辐射防护和管理进行研究,为下一步Y-90治疗辐射管理工作提供技术参考和依据。方法收集国内外Y-90树脂微球治疗技术资料,对广东省部分Y-90树脂微球治疗情况进行调查。对已开展Y-90树脂微球治疗的3家医院辐射工作场所进行辐射水平检测,使用环境X-γ剂量率仪进行辐射剂量当量率检测,使用α、β表面污染测量值进行放射性表面污染检测,同时采集2名患者术后24h内尿液样品,使用低本底α、β测量仪进行总放射性分析。结果在进行Y-90树脂微球治疗过程中,3家医院DSA机房周围剂量当量率在0.15~0.26μSv/h之间,留观病房周围剂量当量率在0.17~0.69μSv/h之间;工作场所控制区β放射性表面污染测量值在<0.07~18.7 Bq/cm^(2)之间,监督区β放射性表面污染测量值均小于0.07 Bq/cm^(2)。2名患者术后24 h内尿液总β放射性约占Y-90输注量的0.0010%~0.0013%。结论3家医院Y-90树脂微球治疗场所各测量点辐射水平均低于国家标准限值,广东省3家医院Y-90树脂微球治疗场所辐射防护和管理处于较好水平。Objective To investigate the radioprotection and management of yttrium-90 resin microsphere therapy based on the survey and monitoring of treatment institutions in Guangdong Province,China,and to provide technical reference and basis for the subsequent radiation management of this therapy.Methods Based on the technical data on yttrium-90 resin microsphere therapy collected from both domestic and international sources,an investigation was conducted on some yttri-um-90 resin microsphere treatment institutions in Guangdong Province.Radiation level monitoring was carried out in the ra-dioactive workplaces of three hospitals that had conducted yttrium-90 resin microspheres therapy.Environmental X-γdose rate meters were used for detecting radiation dose equivalent rates,whileαandβsurface contamination monitors were used for detecting radioactive surface contamination.Additionally,urine samples from two patients were collected within 24 hours post-operation,and total radioactivity was analyzed using low-backgroundαandβcounters.Results During the yt-trium-90 resin microsphere therapy,the radiation dose equivalent rates around the digital subtraction angiography rooms in the three hospitals ranged from 0.15 to 0.26μSv/h,and the radiation dose equivalent rates around the observation wards ranged from 0.17 to 0.69μSv/h.Theβradioactive surface contamination values in the workplace control zones ranged from<0.07 to 18.7 Bq/cm^(2),while the values in the supervised zones were all less than 0.07 Bq/cm^(2).The totalβradioactiv-ity in the urine of the two patients within 24 hours post-operation accounted for approximately 0.0010%to 0.0013%of the yttrium-90 infusion dose.Conclusion The radiation levels at the monitoring sites in the workplaces of the three hospitals are below the national standard limits.The radioprotection and management of yttrium-90 resin microsphere therapy in the three hospitals in Guangdong Province are satisfactory.

关 键 词：Y-90树脂微球 剂量当量率 放射性表面污染 辐射水平 

分 类 号：X591[环境科学与工程—环境工程]