Super resolution SPECT reconstruction with non-uniform attenuation

被引：8
|
作者：
Yan, Ziye [1 ,2 ]
Lu, Yao [2 ]
Wen, Junhai [1 ]
Li, Cuifen [1 ]
机构：
[1] Beijing Inst Technol, Sch Life Sci, Dept Biomed Engn, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Sch Comp Sci & Technol, Beijing Lab Intelligent Informat Technol, Beijing 100081, Peoples R China
来源：
COMPUTERS IN BIOLOGY AND MEDICINE | 2012年 / 42卷 / 06期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
SPECT; Reconstruction; Super resolution; Non-uniform attenuation; DETECTOR RESPONSE; SUPERRESOLUTION; MRI;
D O I：
10.1016/j.compbiomed.2012.02.005
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In this paper, based on Novikov's explicit inversion formula for the attenuated Radon transform, we present a super resolution SPECT reconstruction algorithm with compensation for non-uniform attenuation. Unlike the former methods improving the medical image resolution via super resolution (SR) in the reconstructed image, the proposed method apply the SR algorithm in the low resolution (LR) sinogram, which needs only 1-D shift of the detector, and the PSF is easy to obtain. Simulation results show that our reconstruction algorithm is effective. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：651 / 656
页数：6
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