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Abstract #3395

Universal Parallel Transmit Pulse Design for Local Excitation

Ole Geldschläger1, Tingting Shao1, and Anke Henning1,2

1Max-Planck-Institut, Tübingen, Germany, 2Ernst-Moritz-Arndt-Universität Greifswald, Greifswald, Germany

This study investigates different parallel transmission (PTx) pulse design methods to find a universal PTx-pulse that excites the same local pattern with a 90 degree flip-angle across different heads. Thus, it abandons prospective the need for time-consuming subject specific B1+ mapping and PTx-pulse calculation, during the scan session. The best results were achieved by solving a minimax optimization problem were the maximum normalized root mean square error (NRMSE) over all subjects was minimized. The resulting pulse created magnetization profiles with a maximum NRMSE of around 0.049 across all volunteers.

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