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Differentiable Score-Based Likelihoods: Learning CT Motion Compensation From Clean Images
April 24, 2024, 4:45 a.m. | Mareike Thies, Noah Maul, Siyuan Mei, Laura Pfaff, Nastassia Vysotskaya, Mingxuan Gu, Jonas Utz, Dennis Possart, Lukas Folle, Fabian Wagner, Andreas M
cs.CV updates on arXiv.org arxiv.org
Abstract: Motion artifacts can compromise the diagnostic value of computed tomography (CT) images. Motion correction approaches require a per-scan estimation of patient-specific motion patterns. In this work, we train a score-based model to act as a probability density estimator for clean head CT images. Given the trained model, we quantify the deviation of a given motion-affected CT image from the ideal distribution through likelihood computation. We demonstrate that the likelihood can be utilized as a surrogate …
abstract act arxiv compensation cs.cv diagnostic differentiable estimator head images patient patterns per probability train type value work
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