Four-dimensional reconstruction of gated cardiac SPECT with attenuation and scatter compensation

被引：1
|
作者：
Jin, Mingwu [1 ]
Yang, Yongyi [1 ]
Brankov, Jovan G. [1 ]
Wernick, Miles N. [1 ]
Feng, Bing [2 ]
King, Micheal A. [2 ]
机构：
[1] IIT, Dept Elect & Comp Engn, Chicago, IL 60616 USA
[2] Univ Massachusetts, Sch Med, Div Nucl Med, Worcester, MA 01655 USA
来源：
2007 4TH IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING : MACRO TO NANO, VOLS 1-3 | 2007年
基金：
美国国家卫生研究院;
关键词：
4D reconstruction; gated cardiac SPECT; motion-compensated temporal smoothing; attenuation and scatter compensation;
D O I：
10.1109/ISBI.2007.356815
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In our recent work we proposed a motion-compensated approach for four-dimensional (4D) reconstruction of gated cardiac images in single photon emission tomography (SPECT), and demonstrated that motion-compensated temporal smoothing can be effective for noise reduction in the reconstructed images. In this paper we further develop our proposed 4D approach by considering attenuation and scattering which are two important degradation factors in SPECT imaging. Our simulation results demonstrate that with proper attenuation and scatter compensation, the 4D method can lead to improved reconstruction over independent reconstruction with spatial smoothing only. Our evaluation study was conducted by simulating Tc-99m labeled sestamibi imaging based on the NURBS-based cardiac-torso (NCAT) phantom.
引用
收藏
页码：169 / +
页数：2
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