2 March 2006 Maximum likelihood reconstruction of circular cone-beam CT data
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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.
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Andy Ziegler, Andy Ziegler, Thomas Köhler, Thomas Köhler, } "Maximum likelihood reconstruction of circular cone-beam CT data", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 614246 (2 March 2006); doi: 10.1117/12.650656; https://doi.org/10.1117/12.650656
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