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Abstract #3101

Average SAR Constrained Local RF Shimming

Yigitcan Eryaman1, Celal Alp Tunc1, Pierre Francois van de Moortele2, Kamil Ugurbil2, Ergin Atalar1

1Electrical Engineering, Bilkent University, Ankara, Turkey; 2Medical School-Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA

In this study particle swarm optimization method is used to solve an average SAR constrained local RF shimming problem. Flatness ratio in a region of interest is minimized while satisfying given average SAR constraints. The results are verified by phantom simulations of a 16 channel transmit coil array at 7 T.