某医院Clinae23EX医用电子加速器建设项目放射防护评价  

Radiological protection assessment of a hospital Clinac 23EX medical electron accelerator construction project

作　　者：赵徵鑫 翟贺争[1] 张文艺[1] 高杰[1] 武权[1] 阮书州 苏锴骏 焦玲[1] 

机构地区：[1]中国医学科学院北京协和医学院放射医学研究所,天津市放射医学与分子核医学重点实验室,天津300192

出　　处：《国际生物医学工程杂志》2017年第3期173-176,共4页International Journal of Biomedical Engineering

基　　金：中国医学科学院北京协和医学院“中央级公益类科研院所基本科研业务费”（2016ZX310074,2016ZX310077）;协和青年基金（3332015101）

摘　　要：目的对某医院的Clinac23EX医用电子加速器建设项目进行职业病危害放射防护评价，以保障相关人员的健康与安全。方法依据国家相关法律、法规和标准，结合建设单位提供的相关材料，对该项目进行放射防护检测并进行综合评价。结果该医用电子加速器性能检测结果满足GB／T19046-2013的要求；工作场所的周围剂量当量率介于本底剂量率（0．10μSv／h）与11．5μSv／h之间，机房屏蔽满足放射防护要求；7位放射工作人员的年有效剂量和眼晶体、皮肤的年当量剂量最高值分别为0．85、1．19、1．64mSv，均低于建设单位的年剂量管理控制值和国家相关标准；建设单位的放射防护用品和放射防护管理制度等均满足国家要求。结论该医院的医用电子加速器建设项目在正常运行情况下可有效控制放射性职业病危害因素，放射防护设施亦能达到竣工要求。Objective To evaluate the radiation protection of occupational hazards in a hospital Clinac 23EX medical electronic accelerator construction project so as to ensure the health and safety of the relevant people involved. Methods According to the relevant laws, regulations and standards of China, combined with the relevant materials provided by the construction unit, the radiation protection tests and comprehensive assessment of this project were carried out. Results The performance test results of the medical electron accelerator met the requinements of GB/T 19046-2013 The ambient dose equivalent rate in the workplace was between the background dose rate （0.10 μSv/h） and 11.5 μSv/h, which suggested the computer room shielding met the requirements of radiation protection. The total body effective dose, the for 7 radiation workers were 0.85, 1.19, 1.64 mSv, respectively, which were lower than the dose management control values of the construction unit and the national standards. Radiation protection supplies and the management system of the construction unit met the national requirements. Conclusions The construction project can effectively control the radioactive occupational hazard factors in normal operation, and the radiation protection facilities have reached the completion requirements.

关 键 词：X射线 医用电子加速器 放射防护 评价 

分 类 号：R144[医药卫生—公共卫生与预防医学]