^(131)I治疗场所被服衰变时间及衰变间面积布局的探讨  

Discussion on the clothing decay time and clothing decay room’sspatial distribution of the ^(131)I treatment area

作　　者：张翰笙 杨素云[2] 王蒙婷 胡曼曼 ZHANG Hansheng;YANG Suyun;WANG Mengting;HU Manman(School of Nursing,Shanxi Medical University,Taiyuan 030001;Nuclear Medicine Department,The First Hospital of Shanxi Medical University,Taiyuan 030001)

机构地区：[1]山西医科大学护理学院,太原030001 [2]山西医科大学第一医院核医学科,太原030001

出　　处：《辐射防护》2024年第5期530-536,共7页Radiation Protection

基　　金：山西省科学技术厅科技战略研究专项“科技创新驱动下山西省核素治疗患者辐射防护管理体系的建设”项目(项目编号:202204031401144);山西省知识产权局2023专利转化专项“个人辐射剂量监测仪及辐射场所安全监测系统在医用放射性工作场所的应用”项目(项目编号:202304010)。

摘　　要：分析行^(131)I治疗患者使用过的被服的表面污染水平衰变至清洁解控水平需要的时间,编写Python代码以讨论不同规模下的核医学科^(131)I治疗场所需要的被服衰变间最小面积以及最优布局方式。选取山西省太原市某三级甲等医院2023年8—9月核医学科收治的分化型甲状腺癌术后行^(131)I治疗患者使用过的50床被服并由专人于每天同一时间测量被服的表面污染水平。编写Python代码,讨论不同参数下被服衰变间所需最小空间面积和最优布局。^(131)I治疗患者使用过的被服表面污染水平衰减常数为0.0970±0.2421,出院后2小时被服表面污染水平为0.42~8.67(2.23±1.64)Bq/cm^(2)。被服衰变至清洁解控水平所需的时间为0~24.57(8.67±6.35)d;采用Python计算不同情况下被服衰变间最小面积,并根据储物架数量等条件将衰变间布局方式分为三种,以本研究所在三级甲等医院为例,至少需要7.5 m^(2)被服衰变间。在临床实际工作中,通过本研究结果可以给予被服衰变间面积规划的参考,为临床工作中被服衰变不充分、衰变间空间不足等问题提供一定借鉴,该结果同时适用于放射性废物衰变间或储物间等房间的面积规划计算。In order to analyze the time required for the decaying of the surface contamination level of the clothing used by the patients who received ^(131)I treatment to the clearance level,and to write the Python code to discuss the minimum area and optimal layout of the clothing decay room needed in the ^(131)I treatment site in the department of nuclear medicine at different scales.50 quilts used by patients with differentiated thyroid cancer treated in the Department of Nuclear Medicine of a Grade 3A Hospital in Taiyuan City,Shanxi Province from August to September 2023 were selected and the surface contamination level of the quilt was measured at the same time period every day.Python code was written to discuss the minimum space area and optimal layout of clothing decay under different parameters.The surface contamination decay constant of clothes used by patients treated with ^(131)I was 0.0970±0.2421.Two hours after discharge,the surface contamination level of the clothing ranges from 0.42 to 8.67(2.23±1.64)Bq/cm^(2).The time required for the clothing to decay to the clearance level ranges from 0 to 24.57(8.67±6.35)days.A set of Python code for calculating the minimum area of clothing decay room under different conditions is compiled,and the layout of the clothing decay room is divided into three types according to the number of storage shelves.Taking our institute in Grade 3A Hospital as an example,at least 7.5 m^(2) clothing decay room is needed.In clinical practice,by running Python code and defining relevant parameters,we can give reference to the area planning of clothing decay room,and provide some reference for the problems such as insufficient decay room and insufficient space in clinical work.The code is also applicable to the area planning and calculation of radioactive waste decay room or storage room.

关 键 词：核医学病房 清洁解控 被服 衰变间 碘-131 

分 类 号：TL941.39[核科学技术—辐射防护及环境保护]