临床运行中电子直线加速器的故障原因及干预对策

目的：探讨临床运行中电子直线加速器的故障原因及干预对策。方法：对1台于2020年9月至2021年12月临床运行1年3个月的医用电子直线加速器的故障发生原因与频率调查结果进行回顾性分析，并制定出有效的干预对策。结果：医用电子直线加速器的常见故障原因主要为X射线容积成像影像系统故障，占比为21.82%(12/55)，其次为机械运动故障，占比为18.18%(10/55)；电路故障的发生频率虽然不高，但因此故障所导致的功能停用与停机时间却相对较长。结论：在医用电子直线加速器临床运行过程中，要减少X射线容积成像影像系统与机械运动故障，降低故障发生频率，应该结合医用电子直线加速器临床运行故障发生原因与频率，制定出定期维护保养等有效的干预对策。

Exploring the failure causes and intervention countermeasures of electron linear accelerators in clinical operation

Abstract: Objective To explore the failure causes and intervention countermeasures of electron linear accelerators in clinical operation. Methods A retrospective analysis of the failure causes and frequency investigation results of a medical electron linear accelerator that was in clinical operation for fifteen months from September 2020 to December 2021, and effective intervention countermeasures were formulated. Results The common failure causes of medical electronic linear accelerators are mainly 21.82% (12/55) of X-ray volumetric imaging system failures, followed by 18.18% (10/55) of mechanical motion failures although the frequency of circuit failures is not high, Therefore, the function deactivation and downtime caused by the malfunction is relatively long. Conclusion In the clinical operation of medical electronic linear accelerators, in order to reduce the X-ray volumetric imaging system and mechanical motion failures, and reduce the frequency of failures, it is necessary to combine the causes and frequency of clinical operation failures of medical electronic linear accelerators to establish a regular effective intervention measures such as maintenance, in order to provide more high-quality clinical services for the majority of patients.