摘要
目的:分析检测重晶石混凝土配合比,结合加速器机房屏蔽防护要求,进行屏蔽防护效能的剂量估算。方法:基于15 MV加速器主要防护关注点,参考国家标准和NCRP 151#报告推荐方法,进行屏蔽防护设计和计算。结果:采用重晶石混凝土建设医用加速器机房,其施工工艺直接影响混凝土容重比和机房屏蔽防护效能。结论:重晶石混凝土建设机房可减小墙体厚度,能有效屏蔽X射线、电子线和中子污染。
Objective To analyze the barite concrete mixing ration and estimate the medical accelerator room＇s effectiveness according to its shielding protection requirements.Methods Based on important shielding concerns of the 15MV accelerator room,the design and calculation of shielding protection were performed,with national standards and NCRP 151# report turned to.Results When constructing medical accelerator room by barite concrete,the technique could affect mixing ration and shield protection effectiveness directly.Conclusion The medical accelerator room by barite concrete,with a reduced wall thickness,can shield X ray,electron and neutron pollution.
出处
《医疗卫生装备》
CAS
2011年第11期117-118,共2页
Chinese Medical Equipment Journal
关键词
医用加速器
重晶石混凝土
剂量估算
屏蔽防护
medical accelerator
barite concrete
dose estimation
shielding protection
