Method of building pencilbeam mode l for photon dose calculation
- VernacularTitle:X线照射野笔形束模型建立方法的研究
- Author:
Haoyu JIN
;
Qingwen LU
;
Linghong ZHOU
;
Zhiyuan WANG
- Publication Type:Journal Article
- Keywords:
pencil beam kernel;
convolution;
deconvolution;
intensity-modulated radiotherapy;
dose computation model
- From:
Chinese Medical Equipment Journal
1989;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Generally,pencil beam kernels for photon beam calculation are obtained through Monte Carlo calculations.In this paper,a pencil beam model is set up with a method of deconvolution from measured broad beam profiles.These profiles are usually available in a radiotherapy planning system.Furthermore,this method is applied to computing dose distributions at different sizes.Comparisons with measurements show that the accuracy of the calculated dose distributions fits well in a1%error interval in high dose gradient regions.
