FBP algorithms for attenuated fan-beam projections

被引：0
作者：
You, JS [1 ]
Zeng, GSL [1 ]
Liang, ZR [1 ]
机构：
[1] SUNY Stony Brook, Dept Radiol, Stony Brook, NY 11794 USA
来源：
2004 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-7 | 2004年
关键词：
D O I：
暂无
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Filtered backprojection (FBP) reconstruction algorithm for attenuated fan-beam projections has been derived based on Novikov's inversion formula. The filtering is shift-invariant. The derivation uses a relation of partial derivative between the Cartesian and polar coordinates. We implemented the FBP algorithm and presented the numerical results. As a special application, we give a shift-invariant FBP algorithm for fan-beam SPECT reconstruction with uniform attenuation compensation. Some additional equivalent fan-beam algorithms are also discussed. In the attenuation-free case, our algorithm reduces to the conventional fan-beam FBP algorithm.
引用
收藏
页码：3056 / 3060
页数：5
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