Magnetic Resonance in Medicine 59:779–787 (2008) Additive Angle Method for Fast Large-Tip-Angle RF Pulse Design in Parallel Excitation

Abstract

Current methods for parallel excitation RF pulse design are based on the small-tip-angle approximation, which provides a computationally efficient means of pulse calculation. In general, pulses designed with those methods are inaccurate when scaled to produce large-tip angles, and methods for large-tipangle pulse design are more computationally demanding. This paper introduces a fast iterative method for large-tip-angle parallel pulse design that is formulated as a small number of Bloch equation simulations and fast small-tip-angle pulse designs, the results of which add to produce large-tip-angle pulses. Simulations and a phantom experiment demonstrate that the method is effective in designingmultidimensional large-tip-angle pulses of high excitation accuracy, compared to pulses designed with small-tip-angle methods. Magn Reson Med 59:779–787, 2008. © 2008 Wiley-Liss, Inc.

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Cite this paper

@inproceedings{Grissom2008MagneticRI, title={Magnetic Resonance in Medicine 59:779–787 (2008) Additive Angle Method for Fast Large-Tip-Angle RF Pulse Design in Parallel Excitation}, author={William A Grissom and Chun-Yu Yip and Steven M. Wright and Jeffrey A. Fessler and Douglas C. Noll}, year={2008} }