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影像设备与放疗技术发展的关系越来越紧密,而包含电子射野影像系统(electronic portal imaging device, EPID)的加速器已在放疗中得到了广泛使用,EPID始于20世纪80年代,是使用荧光显像系统获得兆伏级传输图像的技术,在放疗质量控制和质量保证中应用广泛:图像方面如摆位误差验证分析等,加速器自身方面如射野、等中心验证、多叶准直器位置和到位精度验证等,剂量方面如二维三维剂量验证等,同时也有部分用于实时图像引导和剂量引导放疗的尝试。近年来,EPID设备和相关软件发展更新迅速,本文就EPID在放疗中的应用研究进展进行综述。
电子射野影像系统在放疗中的应用进展
Advances in the application of electronic portal imaging device in radiotherapy
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摘要: 电子射野影像系统已成为放疗质量控制和质量保证的重要设备之一,可用于摆位误差验证分析、加速器本身日常质量控制、剂量验证、实时剂量验证等放疗质控指标的采集分析,以保障放疗实施的准确性。笔者就电子射野影像系统在放疗中的应用研究进行简要综述。Abstract: Electronic portal imaging devices have become important equipment for radiotherapy quality control and quality assurance. They can be used to verify positioning errors and other quality control indicators. They can also be applied in the daily quality control of the accelerator, dosimetry, and real-time dosimetry to ensure the accuracy of radiotherapy implementation. In this paper, the application of electronic portal imaging devices in radiotherapy is briefly reviewed.
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Key words:
- Radiotherapy /
- Quality control /
- Electronic portal imaging device /
- Online verification
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