CT metal artifact reduction by soft inequality constraints

Marina Chukalina; Dmitry Nikolaev; Valerii Sokolov; Anastasiya Ingacheva; Alexey Buzmakov; Victor Prun

doi:10.1117/12.2228810

8 December 2015 CT metal artifact reduction by soft inequality constraints

Marina Chukalina, Dmitry Nikolaev, Valerii Sokolov, Anastasiya Ingacheva, Alexey Buzmakov, Victor Prun

Proceedings Volume 9875, Eighth International Conference on Machine Vision (ICMV 2015); 98751C (2015) https://doi.org/10.1117/12.2228810
Event: Eighth International Conference on Machine Vision, 2015, Barcelona, Spain

Abstract

The artifacts (known as metal-like artifacts) arising from incorrect reconstruction may obscure or simulate pathology in medical applications, hide or mimic cracks and cavities in the scanned objects in industrial tomographic scans. One of the main reasons caused such artifacts is photon starvation on the rays which go through highly absorbing regions. We indroduce a way to suppress such artifacts in the reconstructions using soft penalty mimicing linear inequalities on the photon starved rays. An efficient algorithm to use such information is provided and the effect of those inequalities on the reconstruction quality is studied.

Citation Download Citation

Marina Chukalina, Dmitry Nikolaev, Valerii Sokolov, Anastasiya Ingacheva, Alexey Buzmakov, and Victor Prun "CT metal artifact reduction by soft inequality constraints", Proc. SPIE 9875, Eighth International Conference on Machine Vision (ICMV 2015), 98751C (8 December 2015); https://doi.org/10.1117/12.2228810

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