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Proceedings Paper

Maximum likelihood reconstruction of circular cone-beam CT data
Author(s): Andy Ziegler; Thomas Köhler
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Paper Abstract

The behavior of a Maximum Likelihood reconstruction algorithm applied to circular cone-beam CT data is examined. In a simulation study, it is shown that unacceptable artifacts appear, if a constant initial image is used. A start image that incorporates the borders of the reconstructed object correctly improves the situation, but artifacts remain that degrade the image quality. If the initial image is generated from a low-dose helical pre-scan, a cone-beam artifact free image is achieved.

Paper Details

Date Published: 2 March 2006
PDF: 8 pages
Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 614246 (2 March 2006); doi: 10.1117/12.650656
Show Author Affiliations
Andy Ziegler, Philips Research (Germany)
Thomas Köhler, Philips Research (Germany)

Published in SPIE Proceedings Vol. 6142:
Medical Imaging 2006: Physics of Medical Imaging
Michael J. Flynn; Jiang Hsieh, Editor(s)

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