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Abstract #1448

RF pulse design for low SAR simultaneous multislice (SMS) excitation using optimal control

Christoph Stefan Aigner 1 , Christian Clason 2 , Armin Rund 2 , and Rudolf Stollberger 1

1 Institute of Medical Engineering, Graz University of Technology, Graz, Austria, 2 Institute for Mathematics and Scientific Computing, University of Graz, Graz, Austria

Optimal control (OC) is a flexible framework for the design of RF pulses with arbitrary slice profiles, even in the presence of relaxation effects and field inhomogeneities, and is therefore well suited for simultaneous multislice (SMS) imaging. We demonstrate the ability of this approach to generate RF pulses with arbitrary (large) flip angles, slice thickness, slice gaps and slice numbers. The results for two and three slices of 4mm thickness are validated on a 3T MR scanner and indicate the applicability of the proposed method.

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