医科达Axesse型直线加速器剂量率连锁的分析和解决

Analysis and Solutions of Dose Rate linkage of Elekta Axesse Digital Linear Accelerator

随着设备使用年限的增加,由于电子枪灯丝老化、磁控管老化等因素导致直线加速器剂量率连锁发生频率升高,同时影响加速器的正常运行。本文以医科达全数字化直线加速器Axesse的剂量率连锁的维修为例,通过调节电子枪灯丝伺服电压等参数以及自动控制系统参数实现故障排除,旨在降低设备故障停机率,提高临床治疗效率,为同行针对全数字化直线加速器的剂量率故障提供维修参考。

With the increase of equipment service life,the dose-rate linkage frequency of linear accelerator increases and affects the normal operation of the accelerator due to the aging of electron gun filament and magnetron.This paper took the dose-rate linkage maintenance of Axesse,a full-digital linear accelerator of Elekta,as an example,and adjusted parameters such as electron gun filament servo voltage and auto frequenly control system parameters to solve the failure.This article aims to reduce the equipment failure rate,improve the clinical treatment efficiency,and provide a reference for the peer for the full digital linear accelerator doserate failure maintenance.