Fast joint design method for parallel excitation radiofrequency pulse and gradient waveforms considering off-resonance.

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Daehyun YoonDouglas C Noll

Abstract

A fast parallel excitation pulse design algorithm to select and to order phase-encoding (PE) locations (also known as "spokes") of an Echo-Volumar excitation k-space trajectory considering B(0) field inhomogeneity is presented. Recently, other groups have conducted research to choose optimal PE locations, but the potential benefit of considering B(0) field inhomogeneity during PE location selection or their ordering has not been fully investigated. This article introduces a novel fast greedy algorithm to determine PE locations and their order that takes into account the off-resonance effects. Computer simulations of the proposed algorithm for B(1) field inhomogeneity correction demonstrate that it not only improves excitation accuracy but also provides an effective ordering of the PE locations.

References

Sep 13, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Chun-yu YipDouglas C Noll
Mar 10, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Suwit SaekhoV Andrew Stenger
Aug 9, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·William GrissomDouglas C Noll
Oct 17, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Chun-Yu YipDouglas C Noll
Apr 26, 2007·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Zhenghui ZhangV Andrew Stenger
May 29, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Adam C ZelinskiElfar Adalsteinsson
Sep 10, 2008·IEEE Transactions on Medical Imaging·Adam C ZelinskiElfar Adalsteinsson
Sep 19, 2008·Journal of Magnetic Resonance·Kawin SetsompopElfar Adalsteinsson
Jan 24, 2009·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Weiran DengV Andrew Stenger
Feb 11, 2010·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Shaihan J MalikJoseph V Hajnal
Jan 26, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Cungeng YangV Andrew Stenger
Mar 18, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Chao MaZhi-Pei Liang

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Citations

May 30, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Rainer SchneiderJosef Pfeuffer
Sep 22, 2015·IEEE Transactions on Medical Imaging·Hao SunJon-Fredrick Nielsen
Dec 19, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Feng ZhaoDouglas C Noll
May 21, 2015·NMR in Biomedicine·Francesco PadormoShaihan J Malik
Oct 29, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Hao SunJon-Fredrik Nielsen
Mar 13, 2014·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Hao SunJon-Fredrik Nielsen
Mar 7, 2012·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·William A GrissomMika W Vogel

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