一名工业γ射线探伤意外受照人员物理剂量估算  

Physical dose estimation for an accidental exposed person in industrialγ-ray flaw detection

作　　者：付熙明[1] 常纯卉 刘玉龙[2] 武祯 陈惠芳[1] 雷翠萍[1] 袁龙[1] Fu Ximing;Chang Chunhui;Liu Yulong;Wu Zhen;Chen Huifang;Lei Cuiping;Yuan Long(National Institute for Radiological Protection,Chinese Center for Disease Control and Prevention,Beijing 100088,China;Department of Nuclear Emergency Center,Second Affiliated Hospital of Soochow University,Suzhou 215004,China;Nuctech Company Limited,Beijing 100084,China)

机构地区：[1]中国疾病预防控制中心辐射防护与核安全医学所,北京100088 [2]苏州大学附属第二医院应急中心,苏州215004 [3]同方威视技术股份有限公司,北京100084

出　　处：《中华放射医学与防护杂志》2021年第5期380-384,共5页Chinese Journal of Radiological Medicine and Protection

摘　　要：目的对1名工业探伤过量受照人员物理剂量进行估算。方法获取了主要照射参数,照射时间为8 min,照射方式为各向同性点源体外照射,放射源活度为2.183 TBq,采用中国参考人体素体模,利用基于Geant4二次开发的程序进行蒙特卡罗计算,得到各部位的吸收剂量。结果给出了受照者手部剂量分布图,其中手掌大部分区域受照剂量在2~10 Gy,手指部分为10~20 Gy;估算了受照者体内23个组织或器官的吸收剂量,数值范围为0.012~0.207 Gy。结论物理剂量估算方法可以快速评估伤者重点受照部位的局部剂量分布,为医疗救治提供重要参考。Objective To estimate the physical dose of an over exposed person working for industrial radiography.Methods The main exposure parameters were obtained.The exposure duration was 8 min.The exposure pattern was external exposure by isotropic point radioactive source.The radioactive activity was 2.183 TBq.In the present calculation,the Chinese reference adult voxel phantom was used,and the Monte Carlo simulation was performed using the program based on the secondary development of Geant4 to obtain the absorbed dose of each part of the victim.Results The dose distribution in the victim′s hands was obtained.The doses to most areas of the palm were 2-10 Gy,and the doses to the fingers were 10-20 Gy.The equivalent doses to 23 tissues or organs of the exposed person were estimated to be in the range of 0.012-0.207 Gy.Conclusions The physical dose estimation method could evaluate rapidly the local dose distribution of the victim′s key exposed body parts,and thus provide an important reference for medical treatment.

关 键 词：工业探伤 物理剂量估算 蒙特-卡罗模拟 局部剂量分布 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]