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Abstract #3907

Brain SMS-EPI reconstructions with prospective motion correction: improved quality with updated coil sensitivity maps

Bo Li1, Ningzhi Li2, Radu Balan3, Ze Wang1, and Thomas Ernst1
1Diagnostic Radiology and Nuclear Medicine, University of Maryland, Baltimore, Baltimore, MD, United States, 2U.S. Food Drug Administration, Silver Spring, MD, United States, 3Department of Mathematics, University of Maryland, College Park, College Park, MD, United States


We investigated prospective motion correction (PMC) for brain SMS-EPI using camera-based motion tracking and coil sensitivity interpolation. Phase compensation for the receiver was performed to eliminate motion-induced aliasing artifacts. Coil sensitivity profiles were interpolated and extrapolated with Makima piecewise cubic Hermite algorithm to remove residual SMS reconstruction artifacts caused by the misregistration of coil sensitivities between updated (mobile) SMS slices and stationary single-slice reference profiles.

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