VIDEO TECHNIQUES FOR ONLINE PORTAL IMAGING

被引：68

作者：

SHALEV, S

LEE, T

LESZCZYNSKI, K

COSBY, S

CHU, T

机构：

[1] Manitoba Cancer Treatment and Research Foundation, Winnipeg, Man. R3E 0V9, Canada

来源：

COMPUTERIZED MEDICAL IMAGING AND GRAPHICS | 1989年 / 13卷 / 03期

关键词：

Biomedical Engineering - Radiotherapy;

D O I：

10.1016/0895-6111(89)90128-6

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

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.

引用

页码：217 / 226

页数：10