Abstract #4208

Accelerated Dynamic MRI Reconstruction with Sequential Low Rank Matrix Completion and Parallel Imaging

Eric G Stinson¹, Stephen J. Riederer¹, and Joshua D. Trzasko¹

¹Radiology, Mayo Clinic, Rochester, MN, United States

Multi-level (uniform + non-uniform) sampling for accelerated dynamic MRI either solves a computationally expensive full regression problem, or breaks the problem into two separate steps for each sampling operator. Here, the latter approach is taken, with low-rank matrix completion used as a pre-processing step to complete the non-uniform sampling operator before SENSE reconstruction unfolds the effects of the uniform sampling operator. It is shown that both spatial and temporal resolution are retained with LRMC + SENSE in comparison with more traditional pre-processing steps.

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