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Variable-density spiral 3D tailored RF pulses.

Abstract

A variable-density spiral method is presented for reducing three-dimensional tailored radiofrequency pulse duration. Pulse length reductions of 21-32% are possible, with only a small error in the desired excitation profile. The method is demonstrated using simulations, phantom experiments, and T(2)*-weighted images of brain regions with susceptibility-induced intravoxel dephasing. Four 19.7-ms shots were needed to excite a 5-mm-thick slice with reduced susceptibility artifacts in the sinus region at 3T.

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BibTeXRIS

V Andrew Stenger, Fernando E Boada, Douglas C Noll. 2003. Variable-density spiral 3D tailored RF pulses.. https://doi.org/10.1002/mrm.10623

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