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Abstract #0831

Self-Supervised Deep Learning Reconstruction for Highly Accelerated Diffusion Imaging

Ismail Arda Vurankaya1, Yohan Jun2,3, Jaejin Cho2,3, and Berkin Bilgic2,3
1Electrical and Electronics Engineering, Bogazici University, Istanbul, Turkey, 2Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 3Department of Radiology, Harvard Medical School, Boston, MA, United States

Synopsis

Keywords: Image Reconstruction, Image ReconstructionWe propose a zero-shot self-supervised learning (ZS-SSL) approach for accelerated diffusion MRI reconstruction. Our method builds on the approach in [3] for subject-specific MRI reconstruction. We perform reconstruction across all diffusion directions with a single model, rather than different models for each direction, reducing computation time. We partition the directions as training and validation directions. We train the model on training directions, while keeping track of validation loss. We test our model on entire directions, evaluating the reconstruction quality of a single network across all directions. Jointly trained ZS-SSL provides better reconstructions than standard parallel imaging, while remaining computationally efficient.

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Keywords