摘要
本文研究感觉兴趣区域扇形束投影下的图像重建问题,改进扇形束过滤背投影算法从而获得较好的重建结果,并推广到截断扇形束投影数据的情形.
In this article,image reconstruction from fan-beam projections is studied when only a re- gion of interest（ROI） is to be reconstructed. _And the improved fan-beam FBP algorithms are pro- posed. Furthermore,the algorithms are extended to image reconstruction from truncated fan-beam projections.
出处
《应用数学》
CSCD
北大核心
2015年第2期395-403,共9页
Mathematica Applicata
基金
Supported by the NNSF of China(61271398)
关键词
超短扫描
重建算法
扇形束
过滤背投影算法
Super-short-scan
Reconstruction algorithm
Fan-beam
FBP algorithm
