Verification and calibration of leaf position of a multi-leaf collimator by ionization chamber arrays
10.3760/cma.j.issn.1004-4221.2016.03.018
- VernacularTitle:利用电离室阵列验证并校准加速器 MLC 叶片到位精度
- Author:
Yanqiu HUANG
;
Lingping QIU
;
Chunjun ZHOU
- Publication Type:Journal Article
- Keywords:
Multi-leaf collimators;
Accuracy;
Adjustment;
Ionization chamber
- From:
Chinese Journal of Radiation Oncology
2016;(3):279-281
- CountryChina
- Language:Chinese
-
Abstract:
Objective To verify and adjust the leaf position accuracy of a multi-leaf collimator (MLC) in a linear accelerator.Methods Ionization chamber arrays ( StarTrack, IBA) were used to measure the leaf position accuracy of a MLC in a linear accelerator (Precise, ELEKTA) and adjust the leaves out of tolerance.Results After the adjustment of leaf position of the MLC, the analysis of the verification films taken at the offset position showed that the leaf position of the MLC was accurate.Conclusions The method developed in this study is convenient and simple for measurement and calibration of leaf position of the MLC in the linear accelerator, which meets the MLC position accuracy requirement for the linear accelerator.
