医用电子直线加速器快速日检方法研究

Study on the Quick Daily Check for Medical Electron LINAC

该文研究设计了一个可用于不同放疗中心的基于电子射野成像设备(EPID)的快速加速器日检工具。该工具使用EPID快速获取多个方形开野的图像。加速器的主要日检参数由自主开发的软件自动分析这些影像来获取。实验结果表明,工具的检测结果与商用质控(QA)设备测量结果一样可靠,而测量效率更高。

This study presents an electronic portal imaging devices (EPIDs) based on daily check tool for Linac that is usable for different cancer centers. Several images of open rectangle fields were acquired with EPID and the key items of daily Linac check were derived from the obtained images using an in-house developed automatic analysis software. The experiment results showed that each parameter calculated by this tool is as reliable as the corresponding result measured by the commercial quality assurance devices and its measuring efficiency is much higher.