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Abstract #0860

Real-time deep artifact suppression using recurrent U-nets for interactive Cardiac Magnetic Resonance imaging.

Olivier Jaubert1,2, Javier Montalt-Tordera2, Dan Knight2,3, Gerry J. Coghlan2,3, Simon Arridge1, Jennifer Steeden2, and Vivek Muthurangu2
1Department of Computer Science, UCL, London, United Kingdom, 2Centre for Cardiovascular Imaging, UCL, London, United Kingdom, 3Department of Cardiology, Royal Free London NHS Foundation Trust, London, United Kingdom

MR guided catheterization requires both fast imaging and fast reconstruction techniques for interactive imaging. Recent deep learning methods outperformed classical iterative reconstructions with shorter reconstruction times. We propose a low latency framework relying on deep artefact suppression using a 2D residual U-Net with convolutional long short term memory layers trained on multiple orientations. The framework was demonstrated to reconstruct an interactively acquired bSSFP tiny golden angle radial sequence for catheter guidance. The proposed approach enabled real-time imaging (latency/network time=39/19ms) in 3 catheterized patients with promising image quality and reconstruction times.

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