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Abstract #0973

SAR-Reduced Spectroscopic FAST Imaging with Variable Flip Angles

Linda Becker1, Wolfgang Dreher1, Dieter Leibfritz1

1Dept. Chemistry, University of Bremen, Bremen, Germany

A variation of the SSFP-based fast spectroscopic imaging technique spFAST is presented. By flip angle variation the specific absorption rate (SAR) can be reduced considerably with only a minor loss in the signal-to-noise ratio (depending on the relaxation times). Additionally, the oscillating signal intensities can be exploited for k-space weighting in one spatial phase encoding direction which enables better spatial localization. Simulations and experiments at 7T showed that a gaussian flip angle series offers good results for all tested relaxation times.