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Abstract #0070

One-heartbeat cardiac CINE imaging via jointly regularized non-rigid motion corrected reconstruction

Gastao Cruz1, Kerstin Hammernik2,3, Thomas Kuestner1, Daniel Rueckert2,3, René M. Botnar1, and Claudia Prieto1
1School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2Technical University of Munich, Munich, Germany, 3Department of Computing, Imperial College London, London, United Kingdom

Motion-resolved reconstructions are standard for cardiac CINE imaging by splitting data into multiple cardiac phases across several heartbeats. Consequently, the reconstruction of each phase is highly ill-posed, since only a subset of the data are used to reconstruct it. In this work a novel motion corrected framework is developed for highly accelerated cardiac CINE imaging. Each cardiac phase is reconstructed with a motion corrected reconstruction and jointly regularized with every other motion corrected cardiac phase via a non-rigidly aligned patch-based denoiser. This approach leads to a substantial improvement in image quality, enabling highly accelerated CINE images from a single heartbeat.

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