Title :
Reduction of metal streak artifacts in X-ray computed tomography using a transmission maximum a posteriori algorithm
Author :
De Man, B. ; Nuyts, J. ; Dupont, P. ; Marcha, G. ; Suetens, P.
Author_Institution :
Med. Image Comput., Katholieke Univ., Leuven, Belgium
fDate :
6/1/2000 12:00:00 AM
Abstract :
A maximum a posteriori algorithm for reduction of metal streak artifacts in X-ray computed tomography is presented. The algorithm uses a Markov random field smoothness prior and applies increased sampling in the reconstructed image. Good results are obtained for simulations and phantom measurements: streak artifacts are reduced while small, line-shaped details are preserved
Keywords :
Markov processes; computerised tomography; image reconstruction; medical image processing; Markov random field smoothness prior; X-ray computed tomography; increased sampling; medical diagnostic imaging; metal streak artifacts reduction; phantom measurements; reconstructed image; simulations; small line-shaped details; transmission maximum a posteriori algorithm; Biomedical imaging; Computed tomography; Dentistry; Image reconstruction; Image resolution; Imaging phantoms; Iterative algorithms; Iterative methods; Markov random fields; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
