目的为保证放射治疗的安全和有效,必须对放疗射线剂量进行严格的质量控制。方法文章设计了两种不同灵敏体积的电离室探测器及其信号采集系统,并在Varian 600C直线加速器上对其进行了实测。结果两种电离室均得到良好的测量效果,具有相当好的剂量线性关系。结论采集系统可以应用于放射治疗剂量质量控制。 Objective To ensure the safety and effectiveness of radiation therapy, we must strictly control the radiation dose of radiotherapy. Methods Articles Two different sensitive chamber ionization chamber detectors and their signal acquisition systems were designed and measured on a Varian 600C linear accelerator. Results Both ionization chambers gave good measurement results with a fairly good dose-linearity. Conclusion The acquisition system can be applied to dose quality control of radiotherapy.