Verification of accuracy of multileaf collimator leaf position using a two-dimensional ion chamber array
- VernacularTitle:用二维电离室矩阵验证多叶准直器叶片到位精度
- Author:
Zhong-Jian JU
;
Yun-Lai WANG
;
Lin MA
;
Shou-Ping XU
;
Xiang-Kun DAI
;
Lian-Yuan WANG
;
- Publication Type:Journal Article
- Keywords:
Mmultileaf collimator leaf position accuracy;
Two-dimension ion chamber array;
Edge function
- From:
Chinese Journal of Radiation Oncology
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To design a new method to verify the position of multileaf collimator(MLC)leaf using a two-dimensional ion chamber array(2D-array).Methods 2D-array of PTW T10018 Seven29~(TM) was used to calibrate the accuracy of MLC leaf position of Elekta Precise accelerator.The edge function of the leaf position of MLC was measured and used as the reference value.The precision of MLC leaf was then evaluated through comparing the measured and reference values.Results The accuracy of MLC leaf position was found within?0.1 mm.Conclusion This method of verifying the accuracy of multileaf collimator leaf position is easy,simple and reliable
