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Abstract #0313

Virtual coil concept with multi-scale low-rank for real-time cardiac MR at 0.55T

Gastao Cruz1, Jesse Hamilton1, Evan Cummings1, Yuchi Liu1, Vikas Gulani1, and Nicole Seiberlich1
1Department of Radiology, University of Michigan, Ann Arbor, MI, United States

Synopsis

Keywords: Heart, Low-Field MRIReal-time MR applications are often highly undersampled due to the high temporal resolution required. Here, we propose a novel linear forward model combining virtual coils and multi-scale low-rank to enable highly accelerated real-time cardiac MR. The virtual coil concept leverages Hermitian symmetry, whereas multi-scale low-rank attempts to model real-time motion as a combination of subspaces across multiple image scales. Experiments in five healthy subjects demonstrate a considerable improvement in image quality over conventional iterative SENSE, enabling real-time cardiac imaging at 0.55T.

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Keywords