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针对肿瘤治疗病灶靶区的要求,描述适形放射治疗装置中多叶准直器(MLC)的结构和工作原理,设计一种针对MLC叶片位置精度的PID控制器,并进行仿真模拟,结果表明该方法能较好地满足多叶准直器叶片位置控制的精度。
According to the requirements of target area for tumor treatment, the structure and working principle of multi-leaf collimator (MLC) in conformal radiotherapy equipment are described. A PID controller for MLC leaf position accuracy is designed and simulated. The results show that The method can better meet the multi-leaf collimator blade position control accuracy.