| 付熙明,常纯卉,刘玉龙,武祯,陈惠芳,雷翠萍,袁龙.一名工业γ射线探伤意外受照人员物理剂量估算[J].中华放射医学与防护杂志,2021,41(5):380-384 |
| 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 industrial γ-ray flaw detection |
| 投稿时间：2020-07-09 |
| DOI：10.3760/cma.j.issn.0254-5098.2021.05.011 |
| 中文关键词: 工业探伤 物理剂量估算 蒙特-卡罗模拟 局部剂量分布 |
| 英文关键词:Industrial radiography Physical dose estimation Monte Carlo simulation Local dose distribution |
| 基金项目: |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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