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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