Shalev S, Lee T, Leszczynski K, Cosby S, Chu T, Reinstein L, Meek A
Manitoba Cancer Treatment and Research Foundation, Winnipeg, Canada.
Comput Med Imaging Graph. 1989 May-Jun;13(3):217-26. doi: 10.1016/0895-6111(89)90128-6.
The application of on-line portal imaging techniques to the verification of treatment precision is reviewed. The design parameters for a video portal imaging system are described, and the optimization of image quality is discussed with particular emphasis on photon noise. On-line images are presented for a head phantom imaged on a 4 MV linac, and compared with a conventional portal film. The relative advantages of an on-line system are compared with conventional portal film analysis.
综述了在线门静脉成像技术在治疗精度验证中的应用。描述了视频门静脉成像系统的设计参数，并特别强调光子噪声，讨论了图像质量的优化。给出了在4MV直线加速器上成像的头部模型的在线图像，并与传统门静脉片进行了比较。将在线系统的相对优势与传统门静脉片分析进行了比较。
