FOUR-DIMENSIONAL RECONSTRUCTION OF GATED CARDIAC SPECT WITH ATTENUATION AND SCATTER COMPENSATION

Author

Jin, Mingwu ; Yang, Yongyi ; Brankov, Jovan G. ; Wernick, Miles N. ; Feng, Bing ; King, Micheal A.

Author_Institution

Dept. Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL

fYear

2007

fDate

12-15 April 2007

Firstpage

169

Lastpage

172

Abstract

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

Keywords

cardiology; image denoising; image enhancement; image reconstruction; medical image processing; phantoms; single photon emission computed tomography; NURBS-based phantom; SPECT imaging; attenuation compensation; cardiac-torso phantom; degradation factors; four-dimensional reconstruction; gated cardiac SPECT; motion-compensated approach; noise reduction; reconstructed images; scatter compensation; sestamibi imaging; single photon emission tomography; spatial smoothing; temporal smoothing; Attenuation; Degradation; Electromagnetic scattering; Image reconstruction; Motion estimation; Noise reduction; Particle scattering; Reconstruction algorithms; Single photon emission computed tomography; Smoothing methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Imaging: From Nano to Macro, 2007. ISBI 2007. 4th IEEE International Symposium on

Conference_Location

Arlington, VA

Print_ISBN

1-4244-0672-2

Electronic_ISBN

1-4244-0672-2

Type

conf

DOI

10.1109/ISBI.2007.356815

Filename

4193249