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Abstract #0829

SubZero: Subspace Zero-Shot MRI Reconstruction

Heng Yu1, Yamin Arefeen2, and Berkin Bilgic3,4
1The Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, United States, 2Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 3Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 4Department of Radiology, Harvard Medical School, Boston, MA, United States

Synopsis

Keywords: Image Reconstruction, Machine Learning/Artificial Intelligence, Deep LearningRecently introduced zero-shot self-supervised learning (ZS-SSL) has shown potential in accelerated MRI in a scan-specific scenario, which enabled high quality reconstructions without access to a large training dataset. ZS-SSL has been further combined with the subspace model to accelerate 2D T2-shuffling acquisitions. In this work, we propose a parallel network framework and introduce attention mechanism to improve subspace based zero-shot self-supervised learning and enable higher acceleration factors. We name our method SubZero and demonstrate that it can achieve improved performance compared with current methods in T1 and T2 mapping acquisitions .

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Keywords