医用加速器X线衰减规律在放疗质量控制中的应用  

Application of medical X-ray attenuation law in radiotherapy quality control

作　　者：陈敬彬 

机构地区：[1]潮州市潮州医院,广东潮州521011

出　　处：《医疗装备》2008年第1期6-9,共4页Medical Equipment

摘　　要：物理的X线衰减符合距离平方反比规律,而医用X线比距离平方反比规律衰减更快,此属于系统误差,需一修正因子加以校正,否则会影响临床剂量计算的准精度,特别是调强适形治疗优越性的发挥。The physical X- ray attenuates according to the square distance inverse ratio rule, while medical X- ray works faster than that.It＇ s the systemically mistake, which must be corrected by a revising gene.otherwise, it will effect on the precision using of clinic dosage, especially the perfect function of IMRT.

关 键 词：医用X线 衰减规律 修正因子 

分 类 号：TH781[机械工程—仪器科学与技术]