阅读说明：本技术 一种放射治疗出射束监测方法和系统 (Radiotherapy emergent beam monitoring method and system ) 是由 张艺宝 黄宇亮 李晨光 吴昊 刘宏嘉 于 2020-07-15 设计创作，主要内容包括：一种放射治疗出射束监测方法(1200)及系统,包括：获取参考基准图像(1210)；参考基准图像基于计划图像确定；获取治疗出射束图像(1220),基于治疗出射束图像和参考基准图像进行比较,得出比较结果(1230)。放射治疗出射束监测方法及系统具有以下有益效果：解决现有技术参考基准图像效率低或不准确,提高治疗过程中的剂量投照准确性以改善疗效及安全。可以分析和监测治疗过程中电子射野影像装置获取的出射束分布,既可防止重大事故的发生,也可为自适应放疗提供剂量误差等定量信息,提高肿瘤患者的放疗疗效和安全。(A radiation therapy exit beam monitoring method (1200) and system, comprising: acquiring a reference image (1210); a reference base image is determined based on the planning image; a treatment exit beam image is acquired (1220) and compared to a reference image based on the treatment exit beam image, resulting in a comparison (1230). The radiotherapy emergent beam monitoring method and the radiotherapy emergent beam monitoring system have the following beneficial effects: the method solves the problems of low efficiency or inaccuracy of reference standard images in the prior art, and improves the dose projection accuracy in the treatment process so as to improve the curative effect and the safety. The distribution of the emergent beams obtained by the electronic radiation field imaging device in the treatment process can be analyzed and monitored, so that major accidents can be prevented, quantitative information such as dosage errors and the like can be provided for adaptive radiotherapy, and the radiotherapy curative effect and safety of tumor patients are improved.)