The key for dose output of LINAC to assure the nicety and cure effect is stabilization and veracity of dose inspect,so it is more important to test the dose output linearity.

• 剂量监测系统的稳定性和准确性是保证加速器输出剂量的准确度和治疗效果的关键,对剂量监测系统示值线性这一重要指标的检测是十分必要的。