Abstract #0987

High resolution whole-heart coverage multiband first-pass myocardial perfusion MRI using the slice-L+S reconstruction method

Changyu Sun¹, Kenneth C. Bilchick², Daniel Weller³, Michael Salerno^1,2,4, and Frederick H. Epstein^1,4

¹Biomedical Engineering, University of Virginia, Charlottesville, VA, United States, ²Medicine, University of Virginia, Charlottesville, VA, United States, ³Electrical and Computer Engineering, University of Virginia, Charlottesville, VA, United States, ⁴Radiology, University of Virginia, Charlottesville, VA, United States

k-t undersampled multiband first-pass perfusion imaging provides in-plane and through-plane acceleration and potentially enables high spatial resolution and whole-heart coverage. Our slice-L+S work splits MB data consistency and enforcing L+S into two subproblems wherein MB data, in- and through-plane coil information and L+S properties of slices are systematically utilized. Here we compare slice-L+S to single-band L+S and slice-GRAPPA followed sequentially by L+S (seq-SG-L+S) using 3 retrospectively undersampled datasets. High resolution nine-slice data with multiband factor-3 and rate-3 undersampling were prospectively acquired in 4 patients. Slice-L+S showed better image quality demonstrated by quantitative results and scores from two cardiologists.

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