不同品牌医用电子直线加速器的故障分析及设备管理策略

Malfunction analysis and equipment management strategies of medical linear accelerators with different brands

摘要:

目的 通过阐述主流品牌医用电子直线加速器（LA）的故障情况，探讨控制故障风险点的策略并为日常设备管理提供思路。方法 选取2台瓦里安和1台医科达LA，统计分析2022年12月至2023年12月期间的94次故障，比较故障类型、故障处置方式在不同品牌和不同使用年限之间的差异。结果 投入使用1年内的设备瓦里安TrueBeam故障率最高（45.74%）（P<0.05），多叶光栅故障和电子加速系统故障明显多于其他类型的故障（P<0.05），需要更换部件的故障明显多于可通过重启或调整参数的故障（P<0.05），瓦里安更换部件的数量多于医科达（P<0.05）。结论 LA作为高故障率的高精尖设备，需提升临床工程师的维护能力和维修判断能力，切实保障设备的临床运行。

关键词:医用电子直线加速器;故障分析;干预对策;维护管理

Abstract:

Objective To discuss the malfunctions of medical linear accelerator (LA) in major brands, explore the strategies of failure risk control and provide ideas for daily equipment management.Methods A total of 94 malfunctions of LAs in two Varian and one Elekta from December 2022 to December 2023 were analyzed to compare the differences of failure types and disposals in different brands and service-lifes.Results The fault rate with the service life below one year was the highest (P<0.05). The malfunctions in multi-leaf collimator and electronic acceleration system were significantly frequent than others (P<0.05). Disposals in replacing components were significantly more than those in restarting or adjusting parameters (P<0.05), and Varian replaced more components than Elekta (P<0.05).Conclusion As a sophisticated equipment with high failure rates, LA should be paid more attention by promoting the abilities of repair and maintenance judgment of clinical engineers, thereby ensuring the equipment operation in clinical application.

Key words:medical linear accelerator;malfunctions analysis;intervention measures;maintenance management