4D RECONSTRUCTION OF GATED CARDIAC SPECT USING FOURIER HARMONICS

被引：0
|
作者：
Niu, Xiaofeng [1 ]
Yang, Yongyi [1 ]
机构：
[1] IIT, Dept Elect & Comp Engn, Chicago, IL 60616 USA
来源：
2008 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-4 | 2008年
关键词：
Gated cardiac SPECT; 4D reconstruction; spatio-temporal processing; Fourier basis functions;
D O I：
10.1109/ICME.2008.4607489
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
We propose a four-dimensional reconstruction method for noise reduction in gated cardiac SPECT images. Aiming to exploit the periodic nature of cardiac motion, we use a Fourier harmonic representation to model the image activities along the gated temporal dimension. We develop a penalized least-squares approach to reconstruct the different harmonics in the representation model, which also takes into account spatial smoothing. The proposed method is demonstrated using simulated cardiac perfusion imaging based on the NURBS-based cardiac-torso (NCAT) phantom. Our results show that it could lead to improved reconstruction of the gated images.
引用
收藏
页码：533 / 536
页数：4
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