直线加速器高能电子束的剂量定标

Dose calibration of high-energy electron for linear accelerator

目的:对SIEMENS MD7745型直线加速器12MeV高能电子束进行剂量定标。方法:阐述这项工作的通用国际规程、内容及技术标准的同时,还对高能电子束剂量定标中存在的一些问题进行分析,以纠正实际工作存在的错误认识。结果:确保该工作的精度达到WHO有关放射治疗质量保证和质量控制的要求。结论:要想提高治疗效果,必须把剂量定标,特别是高能电子束的剂量定标的误差降到最低。

Objective To calibrate the dose of 12MeV high-energy electron for Siemens MD7745 medical linear accelerator.Methods The international protocols,contents and technical standards were expatiated.Some existing problems in dose calibration of high-energy electron were analyzed.Results The working precision met the requirement of quality assurance in radiotherapy by WHO.Conclusion In order to improve the therapeutic effect,the dose must be calibrated,and the error in dose calibration of high-energy electron should be reduced to the lowest.