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Published in:
2015 | OriginalPaper | Chapter
Projection-Based Denoising Method for Photon-Counting Energy-Resolving Detectors
Authors : Yanye Lu, Michael Manhart, Oliver Taubmann, Tobias Zobel, Qiao Yang, Jang-hwan Choi, Meng Wu, Arnd Doerfler, Rebecca Fahrig, Qiushi Ren, Joachim Hornegger, Andreas Maier
Published in: Bildverarbeitung für die Medizin 2015
Publisher: Springer Berlin Heidelberg
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In this paper, we present a novel projection-based novel noise reduction method for photon counting energy resolving detectors in Spectral Computed Tomography (CT) imaging. In order to denoise the projection data, a guidance image from all energy channels is computed, which employs a variant of the joint bilateral filter to denoise each energy bin individually. The method is evaluated by a simulation study of cone beam CT data. We achieve a reduction of noise in individual channels by 80% while at the same time preserving edges and structures well in the results, which indicate that the methods are applicable to clinical practice.