Lam K S, Partowmah M, Lam W C
Br J Radiol. 1986 Oct;59(706):1007-13. doi: 10.1259/0007-1285-59-706-1007.
A digital imaging system has been constructed to obtain the treatment portal image of a patient during external beam radiotherapy. A DEC LSI-11/23 microcomputer controls a stepper motor, which moves a linear array of 256 silicon diodes to scan the radiation transmitted through the patient. The computer also processes the collected data to generate an image for displaying on a video monitor. The quality of the digital image is comparable to that of the conventional verification radiographs. Major advantages of the system include the speed and simplicity in data storage and retrieval and in its capability of direct comparison with simulation radiographs.
已构建了一种数字成像系统，用于在体外束放射治疗期间获取患者的治疗射野图像。一台DEC LSI-11/23微型计算机控制一个步进电机，该步进电机移动由256个硅二极管组成的线性阵列，以扫描透过患者的辐射。计算机还对收集到的数据进行处理，以生成一幅图像，用于在视频监视器上显示。数字图像的质量与传统验证X射线照片的质量相当。该系统的主要优点包括数据存储和检索的速度和简便性，以及能够直接与模拟X射线照片进行比较。
