Reduction of metal streak artifacts in x-ray computed tomography using a transmission maximum a posteriori algorithm

被引：184
作者：
De Man, B [1 ]
Nuyts, J
Dupont, P
Marchal, G
Suetens, P
机构：
[1] Katholieke Univ Leuven, PSI, ESAT, GHB,UZ, B-3000 Louvain, Belgium
[2] Katholieke Univ Leuven, GHB, UZ, Dept Nucl Med, B-3000 Louvain, Belgium
[3] Katholieke Univ Leuven, GHB, UZ, Dept Radiol, B-3000 Louvain, Belgium
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2000年 / 47卷 / 03期
关键词：
D O I：
10.1109/23.856534
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
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页码：977 / 981
页数：5
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