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Abstract #1596

How far Should Coil Coverage be Extended to Reach Optimum Simultaneous Multi-Slice Acceleration in Cardiac MRI? 

Anpreet Ghotra1, Sam-Luca JD Hansen1, Robin Etzel1, Mirsad Mahmutovic1, Alina Scholz1, Nicolas Kutscha1, Matthäus Poniatowski1, Markus W May1, Choukri Mekkaoui2, and Boris Keil1
1Institute of Medical Physics and Radiation Protection, TH Mittelhessen University of Applied Sciences, Giessen, Germany, 2Harvard Medical School, Massachusetts General Hospital, Department of Radiology, A.A. Martinos Center for Biomedical Imaging, Boston, MA, United States

Even with commonly used k-space subsampling acceleration methods, cardiac MRI still suffers from relatively slow acquisition speed which imposes limitations in spatial and temporal resolution and volumetric coverage when imaging the moving heart. The recently introduced simultaneous multi-slice (SMS) acceleration technique offers the potential to acquire multiple slices which can substantially increase myocardial coverage without compromising in-plane spatial resolution. However, to disentangle the collapsed slices, array coils must provide enough sensitivity variation along the slice direction. Therefore, in this simulation study, we evaluated the coverage of the cardiac array coil to maximize SMS encoding performance.

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