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

页码：3056 / 3060

页数：5

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