医疗卫生装备2017，Vol.38Issue(7)：81-84,88,5.DOI:10.7687/j.issn1003-8868.2017.07.081
医用直线加速器机房屏蔽防护改建研究
Investigation on shielding reconstruction with clay bricks for medical linear accelerator room
摘要
Abstract
Objective To provide a solution to improve the radiation shielding for medical accelerator room with clay bricks.Methods According to the basic shielding equations provided by the relevant national standards and international reports,equations for shielding reconstruction calculation were derived to calculate the required thickness of clay bricks wall,which reached the reference dose rate control level.The dose rates at reference points after reconstruction were also estimated based on the measured dose rates at reference points before reconstruction of accelerator room,calculated distance correction factors and transmission factors of added clay bricks wall.Results The measured dose rates satisfied the requirement of reference dose rate control level.The estimated dose rates were slightly higher than the measured values.Conclusion The radiation shielding requirement of medical accelerator room is fulfilled with the presented shielding reconstruction method by building clay bricks wall,measured dose rates could be conservatively predicted with the dose rates calculated by derived equations.关键词
医用直线加速器/机房屏蔽/屏蔽计算/剂量率估算/黏土砖Key words
medical linear accelerator/machine room shielding/shielding calculation/dose rate estimation/clay brick分类
医药卫生引用本文复制引用
宋威,赵迪,于大海,孙新臣,李金凯,张西志,李军..医用直线加速器机房屏蔽防护改建研究[J].医疗卫生装备,2017,38(7):81-84,88,5.基金项目
国家自然科学基金资助项目(81301971) （81301971）
