Paper Info
Title
Physical phantom evaluation of EM-IntraSPECT (EMIS) algorithm for nonuniform attenuation correction in cardiac imaging
Abstract
The purpose of this study was to evaluate performance of the EM-IntraSPECT (EMIS) algorithm for non-uniform attenuation correction in the chest. OWS is a maximum-likelihood expectation, maximization (MLEM) algorithm for simultaneously estimating SPECT emission and attenuation parameters from emission data alone. EMIS uses the activity within the. patient as transmission tomography sources with which attenuation coefficients can be estimated. A thorax phantom with a normal heart was used. The activity images reconstructed by EMIS were compared to images reconstructed using a conventional MLEM. with a fixed uniform attenuation map. Uniformity of normal heart was improved with EMIS as compared to a conventional MLEM.
Year
DOI
Venue
2001
10.1117/12.430966
Proceedings of SPIE
Keywords
Field
DocType
cardiac SPECT,non-uniform attenuation correction,maximum-likelihood expectation maximization
Single-photon emission computed tomography,Expectation–maximization algorithm,Imaging phantom,Algorithm,Normal heart,Tomography,Cardiac imaging,Attenuation,Correction for attenuation,Physics
Conference
Volume
ISSN
Citations 
4322
0277-786X
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Andrzej Krol1298.49
James E. Bowsher25315.92
David H. Feiglin3188.32
g m gagne400.34
bradford j hellwig500.34
Martin P. Tornai6207.95
f d thomas700.34