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Abstract #4357

Numerical Optimization of a 3-Channel Array Coil for 31P Functional Spectroscopy at 7T

Andre Kuehne1, 2, Ewald Moser1, 2, Elmar Laistler1, 2

1Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria; 2MR Centre of Excellence, Medical University of Vienna, Vienna, Austria

A 3-channel 31P coil array for 7 T brain spectroscopy of the visual cortex is optimized numerically. The coil size & distance to the head are varied to find the optimum coil geometry. For each configuration, the whole 2D excitation phase parameter space is evaluated w.r.t. B1 and local SAR using a fast SAR calculation routine based on local power correlation matrices. Three different excitation modes are compared w.r.t.