DocumentCode
2554474
Title
GISTA reconstructs faster with a restart strategy and even faster with a FISTA-like reconstruction
Author
Cloquet, Christophe ; Loris, Ignace ; Verhoeven, Chris ; Defrise, Michel
Author_Institution
Dept. of Nucl. Med., Vrije Univ. Brussel, Brussels, Belgium
fYear
2012
fDate
Oct. 27 2012-Nov. 3 2012
Firstpage
2334
Lastpage
2338
Abstract
In this work, we showed that GISTA, reconstructing images with proven convergence and no internal iteration, can be used in CT reconstruction using the TV penalty. We showed that a careful choice of the initialization speeds up the algorithm in the early iterations. We suggested that a restart scheme might help further, and that a FISTA-Iike scheme might be worth investigating.
Keywords
computerised tomography; convergence of numerical methods; image reconstruction; iterative methods; medical image processing; CT image reconstruction; FISTA-like reconstruction; GISTA image reconstruction; TV penalty; computed tomography; convergence; iteration;
fLanguage
English
Publisher
ieee
Conference_Titel
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location
Anaheim, CA
ISSN
1082-3654
Print_ISBN
978-1-4673-2028-3
Type
conf
DOI
10.1109/NSSMIC.2012.6551530
Filename
6551530
Link To Document