Physical phantom evaluation of EM-IntraSPECT (EMIS) algorithm for nonuniform attenuation correction in cardiac imaging

Andrzej Krol; James E. Bowsher; David H. Feiglin; George M. Gagne; Bradford J. Hellwig; Martin P. Tornai; Frank Deaver Thomas

doi:10.1117/12.430966

3 July 2001 Physical phantom evaluation of EM-IntraSPECT (EMIS) algorithm for nonuniform attenuation correction in cardiac imaging

Andrzej Krol, James E. Bowsher, David H. Feiglin, George M. Gagne, Bradford J. Hellwig, Martin P. Tornai, Frank Deaver Thomas

Author Affiliations +

Proceedings Volume 4322, Medical Imaging 2001: Image Processing; (2001) https://doi.org/10.1117/12.430966
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

Abstract

The purpose of this study was to evaluate performance of the EM-IntraSPECT (EMIS) algorithm for non-uniform attenuation correction in the chest. EMIS 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.

Citation Download Citation

Andrzej Krol, James E. Bowsher, David H. Feiglin, George M. Gagne, Bradford J. Hellwig, Martin P. Tornai, and Frank Deaver Thomas "Physical phantom evaluation of EM-IntraSPECT (EMIS) algorithm for nonuniform attenuation correction in cardiac imaging", Proc. SPIE 4322, Medical Imaging 2001: Image Processing, (3 July 2001); https://doi.org/10.1117/12.430966

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available