Title: Suppression of Metal Artifacts in CT Using a Reconstruction Procedure That Combines MAP and Projection Completiond
Authors: Lemmens, Catherine ×
Faul, David
Nuyts, Johan #
Issue Date: Feb-2009
Publisher: Institute of Electrical and Electronics Engineers
Series Title: IEEE Transactions on Medical Imaging vol:28 issue:2 pages:250-260
Abstract: Metal implants such as hip prostheses and dental fillings produce streak and star artifacts in the reconstructed computed tomography (CT) images. Due to these artifacts, the CT image may not be diagnostically usable. A new reconstruction procedure is proposed that reduces the streak artifacts and that might improve the diagnostic value of the CT images. The procedure starts with a maximum a posteriori (MAP) reconstruction using an iterative reconstruction algorithm and a multimodal prior. This produces an artifact-free constrained image. This constrained image is the basis for an image-based projection completion procedure. The algorithm was validated on simulations, phantom and patient data, and compared with other metal artifact reduction algorithms.
ISSN: 0278-0062
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear Medicine & Molecular Imaging
× corresponding author
# (joint) last author

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