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Published in:
2015 | OriginalPaper | Chapter
Blind Sparse Motion MRI with Linear Subpixel Interpolation
Authors : Anita Möller, Marco Maaß, Alfred Mertins
Published in: Bildverarbeitung für die Medizin 2015
Publisher: Springer Berlin Heidelberg
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Vital and spontaneous motion causes major artifacts in MRI. In this paper a method is presented which reduces subpixel motion artifacts via computational post processing on a complete MR scan without additional data. On the compressed sparse MRI representation, translational subpixel motion is estimated iteratively from a fully sampled, but motion corrupted k-space, and motion free images are reconstructed by linear interpolation. Motion adjusted results are presented for the Shepp-Logan phantom and brainweb data.