Radially-dependent nonlinear sinogram filtering

被引：0
|
作者：
Andía, BI [1 ]
Sauer, KD [1 ]
Bouman, CA [1 ]
机构：
[1] Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA
来源：
2001 IEEE NUCLEAR SCIENCE SYMPOSIUM, CONFERENCE RECORDS, VOLS 1-4 | 2002年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This work concentrates on the effects of angular sinogram filtering in Nonlinear Backprojection (NBP). Previous studies have shown that angular filtering of a sinogram may introduce nonuniform resolution loss in the reconstruction. To counteract this effect, we have introduced nonlinear filtering with angular characteristics dependent on distance from the center of the sinogram of the region where they are applied. First, the effects of variable-length linear angular filtering as a pre-processing before filtered backprojection has been studied; the same principles are then applied to NBP.
引用
收藏
页码：1404 / 1408
页数：5
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