Reducing SAR requirements in multi-slice volumetric single-shot spatiotemporal MRI by two-dimensional RF pulses

摘要

PurposeSpatio-temporal encoding (SPEN) can deliver single-scan MR images without folding complications and with increased robustness to chemical shift and susceptibility artifacts. Yet it does so at the expense of relatively high Specific Absorption Rates (SAR), owing to its reliance on frequency-swept pulses. This study describes SPEN implementations aimed at full 3D multi-slice imaging, possessing reduced SAR thanks to an implementation based on new 2D RF pulses.