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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