Affine deformation correction in cone beam Computed Tomography

TitleAffine deformation correction in cone beam Computed Tomography
Publication TypeConference Paper
Year of Publication2015
AuthorsVan Nieuwenhove, V., J. De Beenhouwer, T. De Schryver, L. Van Hoorebeke, and J. Sijbers
Conference NameFully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine
Conference LocationNewport, Rhode Island, USA

In Computed Tomography (CT), motion and deformation during the acquisition produce streaks and blurring, known as motion artefacts. In contrast to other deformation correction techniques, this work introduces an efficient algorithm to correct for global affine deformations directly on the cone beam projections. During an experiment, the exact deformation parameters are unknown. These parameters are estimated in the projection domain by minimizing a plane based raw data redundancy criterion. Simulations and experimental data show a reduction of motion artefacts in the reconstructed images.

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