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Abstract #2909

A Low-Power Asymmetrically-Selective Adiabatic Pulse

Adam B. Kerr1, Duan Xu2, Peder E. Z. Larson2, Daniel B. Vigneron2, John M. Pauly1

1Electrical Engineering, Stanford University, Stanford, CA, United States; 2Radiology & Biomedical Imaging, UCSF, San Francisco, CA, United States

A novel adiabatic full-passage pulse has been designed demonstrating a 33% peak power reduction compared to a classic hyperbolic secant (HS) pulse, while maintaining the spectral selectivity at one frequency edge. The new pulse is used to design the two adiabatic spectral-spatial pulses for a PRESS-localization, but with spectral profiles offset and reversed to achieve full HS selectivity. The peak power reduction will enable the higher spectral bandwidths demanded at high field without compromising selectivity.