广东省392台次CT质量控制和机房防护检测结果分析  

An analysis of results of 392 times of CT quality control and room radiological protection testing in Guangdong Province,China

作　　者：程希元 廖炎鹏 刘书朋 王闯 周美娟[1,2,3,4] CHENG Xiyuan;LIAO Yanpeng;LIU Shupeng;WANG Chuang;ZHOU Meijuan(Department of Radiation Medicine,School of Public Health,Southern Medical University,Guangzhou 510515 China;NMPA Key Laboratory for Safety Evaluation of Cosmetics,School of Public Health,Southern Medical University,Guangzhou 510515 China;Guangdong-Hongkong-Macao Joint Laboratory for Contaminants Exposure and Health,School of Public Health,Southern Medical University,Guangzhou 510515 China;Key Laboratory of Tropical Disease Research of Guangdong Province,School of Public Health,Southern Medical University,Guangzhou 510515 China;SMU Medical Equipment Test Co.,Ltd.,Guangzhou 510515 China;Department of Radiation Oncology,Nanfang Hospital,Southern Medical University,Guangzhou 510515 China;Guangdong Medical Devices Quality Surveillance and Test Institute,Guangzhou 510663 China)

机构地区：[1]南方医科大学公共卫生学院放射医学系,广东广州510515 [2]国家药品监督管理局化妆品安全评价重点实验室,南方医科大学公共卫生学院,广东广州510515 [3]粤港澳污染物暴露与健康联合实验室,南方医科大学公共卫生学院,广东广州510515 [4]广东省热带病研究重点实验室,南方医科大学公共卫生学院,广东广州510515 [5]广州南方医大医疗设备综合检测有限责任公司,广东广州510515 [6]南方医科大学南方医院放疗科,广东广州510515 [7]广东省医疗器械质量监督检验所,广东广州510663

出　　处：《中国辐射卫生》2024年第1期61-67,共7页Chinese Journal of Radiological Health

摘　　要：目的 分析近年来广东省部分CT机质量控制和CT机房防护情况,为放射卫生监督提供依据。方法 收集广州某第三方放射卫生技术服务机构2019—2021年对392台次CT机的质量控制和放射防护检测数据,统计分析CT所在医院级别、CT生产厂家、CT质量控制检测结果、防护检测合格率等指标。结果 被检CT机覆盖了广东省各级别医院,分别来源于国内、国外9个主要CT设备制造商;机房防护检测合格率为99.88%,其中5次机房外周围剂量当量率超标情况中,4次为控制室防护门,1次为机房墙体;设备质量控制检测整体合格率99.49%,不符合指标出现在定位光精度和重建层厚偏差。结论 广东省近年来CT设备质量控制和机房防护情况处于较好水平。Objective To provide a theoretical basis for radiation health supervision through an analysis of the situation of computed tomography(CT)equipment quality control and CT room radiological protection in Guangdong Province,China in recent years.Methods We collected the data of 392 times of CT quality control and radiological protection testing by a third-party radiological health technical service institution in Guangdong Province from 2019 to 2021.We analyzed the levels of CT-owning hospitals,CT manufacturers,CT quality control test results,and the pass rate of radiation protection tests.Results The examined CT scanners were from different levels of hospitals in Guangdong Province,and were manufactured by nine major CT equipment manufacturers at home and abroad.The pass rate of CT room radiological protection was 99.88%,and the ambient dose equivalent rates of five monitoring points exceeded the limit,with four at the control room door and one at the shield wall of the room.The overall pass rate of CT equipment quality control was 99.49%,and the non-conforming parameters were the accuracy of positioning light and the deviation of reconstructed slice thickness.Conclusion In recent years,CT equipment quality control and room radiation protection in Guangdong Province have been at a high level.

关 键 词：X射线计算机体层摄影装置 质量控制 放射防护 加权CT剂量指数 周围剂量当量率 

分 类 号：X591[环境科学与工程—环境工程]