Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography

被引：0
|
作者：
Siewerdsen, JH [1 ]
Jaffray, DA [1 ]
机构：
[1] William Beaumont Hosp, Dept Radiat Oncol, Royal Oak, MI 48073 USA
来源：
PROCEEDINGS OF THE 22ND ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-4 | 2000年 / 22卷
关键词：
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
A theoretical method for identifying optimal x-ray imaging geometry is presented and applied to cone-beam CT (CBCT) using a flat-panel imager (FPI), The method includes the effects of x-ray source distribution, imaging task, x-ray scatter, and detective quantum efficiency (DQE) on the ICRU-recommended figure of merit for image quality -detectability index, Cascaded systems analysis for FPIs is extended to incorporate the effects of x-ray scatter directly into the DQE. For the FPI-CBCT prototype being implemented for image-guided radiotherapy of the prostate, optimal magnification is similar to1.4-1.6, depending primarily on the magnitude of the x-ray scatter fraction.
引用
收藏
页码：106 / 107
页数：2
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