Sinogram constrained TV-minimization for metal artifact reduction in CT

26 Apr 2014  ·  Clemens Schiffer, Kristian Bredies ·

A new method for reducing metal artifacts in X-ray computed tomography (CT) images is presented. It bases on the solution of a convex optimization problem with inequality constraints on the sinogram, and total variation regularization for the reconstructed image... The Chambolle-Pock algorithm is used to numerically solve the discretized version of the optimization problem. As proof of concept we present and discuss numerical results for synthetic data. read more

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