Abstract #0201

Validation and Application of SLfRank RF Pulse Design

zheng zhong¹, Congyu Liao², Janhavi Singhal³, Frank Ong², Shreyas S. Vasanawala², and John M. Pauly⁴

¹Radiology, Stanford University, Palo Alto, CA, United States, ²Radiology, Stanford University, Stanford, CA, United States, ³University of California Santa Barbara, Santa Barbara, CA, United States, ⁴Electrical Engineering, Stanford University, Stanford, CA, United States

Synopsis

Keywords: RF Pulse Design & Fields, RF Pulse Design & FieldsSLfRank is a novel RF pulse design framework proposed to improve upon the well-established Shinnar Le-Roux (SLR) design algorithm. Numerical experiments demonstrated promising effectiveness of SLfRank, prompting a need to validate its experimental feasibility. An experimental comparison of SLR and SLfRank is achieved by measuring slice profiles, multiband excitation, and spin-echo pulses on phantom and human brain. SLfRank produced images of comparable quality to the SLR algorithm, but with reduced RF energy and greater control over RF pulse phase. SLfRank’s numerical feasibility aligned closely with its effectiveness experimentally thus proving its technical feasibility for applications in this work and beyond.

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