Fault Analysis and Maintenance of Multi-Leaf Grating in Varian Medical Linear Accelerator
YU Quanda1，ZHENG Xue2
1. Department of Radiotherapy, The First Hospital of Qiqihar, Qiqihar Heilongjiang 161005, China丨
2. Qiqihar University, Qiqihar Heilongjiang 161000, China
Abstract：This paper analyzed the working process of the multi-blade grating in detail by analyzing the basic structure of the multi-leaf
grating of varian medical linear accelerator, and the blade stuck fault, over-error fault and blade group collision fault were also
analyzed in detail. The motor current was carefully tested, the optical linear encoder and soft potentiometer were also well checked,
finally the multi leaf grating fault was solved. The three fault examples cover the typical common and special faults of multi-leaf
gratings, and provide reference for the accelerator to deal with the same fault.
余权达1，郑雪2. 瓦里安医用直线加速器多叶光栅故障分析和维修[J]. 中国医疗设备, 2021, 36(9): 179-183.
YU Quanda1，ZHENG Xue2. Fault Analysis and Maintenance of Multi-Leaf Grating in Varian Medical Linear Accelerator. China Medical Devices, 2021, 36(9): 179-183.
