二维电离室矩阵在动态楔形板参数验证中的应用与研究  

Application and Research of Two-dimensional Ion Chamber Array in Verifying Physical Parameters of Dynamic Wedge

作　　者：张昕[1] 于得全[1] 高宏[1] 梁军[1] 卢飞[1] 

机构地区：[1]第四军医大学唐都医院放疗科,西安710038

出　　处：《医疗卫生装备》2010年第12期129-130,共2页Chinese Medical Equipment Journal

摘　　要：目的:探讨用二维电离室矩阵验证动态楔形板物理参数的正确性。方法:用二维电离室矩阵分别测量动态楔形板Y1-IN方向15°、30°、45°、60°,固定楔形板IN方向15°、30°、45°、60°,得到相应楔形野的注量图。结果:相同楔形角的物理楔形板和动态楔形板的楔形曲线大致重合。结论:二维电离室矩阵可用于验证Varian动态楔形板的物理参数。Objective To discuss the correctness of two-dimensional ion chamber array in verifying the physical parameters of dynamic wedge.Methods The Y1-IN direction 15°,30°,45° and 60° of dynamic wedge and the IN direction 15°,30°,45° and 60° of static wedge were measured with two-dimensional ion chamber array.The fluence maps of wedge field were got.Results The wedge curve of dynamic wedge and physical wedge were approximately the same in the condition of same wedge angle.Conclusion The two-dimensional ion chamber array can be used to verify the physical parameters of Varian dynamic wedge.

关 键 词：二维电离室矩阵 动态楔形板 物理参数 

分 类 号：R815[医药卫生—放射医学]