基于胶片分析的质子剂量场质量控制方法研究

Research on Quality Assurance Methods of Proton Dose Field Based on Dose Film Analysis

胶片法进行剂量检测，在γ刀、Ｘ刀以及常规放疗中得到了广泛的应用，其优点是使用方便，占机时间短，空间分辨率高。本文介绍了胶片法的物理模型和具体实现的步骤，并根据实验结果，提出一种使用ｒａｄｉｏｃｈｒｏｍｉｃ胶片进行质子剂量检测的方法。该胶片在能量无关性、大剂量曝光等方面，表现出了非常好的特性。

Dose calibration with film is used widely in Gamma-Knife, X-Knife and other general radio-therapy instruments, for its excellence in easy to use, less occupying time and high spatial resolution This paper puts forward the physics model of dose film method and implementing procedure, also an approach using radiochromic film in proton dose calibration is discussed The radiochromic film shows great performance in less energy-dependence and good response to high dose exposal