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Minimum TR radiofrequency-pulse design for rapid gradient echo sequences
2021
Magnetic Resonance in Medicine
A framework to design radiofrequency (RF) pulses specifically to minimize the TR of gradient echo sequences is presented, subject to hardware and physiological constraints. Single-band and multiband (MB) RF pulses can be reduced in duration using variable-rate selective excitation (VERSE) VERSE for a range of flip angles; however, minimum-duration pulses do not guarantee minimum TR because these can lead to a high specific absorption rate (SAR). The optimal RF pulse is found by meeting spatial
doi:10.1002/mrm.28705
pmid:33586800
fatcat:gnbllsovjnby5m62ugm7o7lvre