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.
出处
《医疗卫生装备》
CAS
2010年第12期129-130,共2页
Chinese Medical Equipment Journal
关键词
二维电离室矩阵
动态楔形板
物理参数
two-dimensional ion chamber array
dynamic wedge
physical parameters
