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Abstract #2603

MR Spectroscopy of Arbitrarily Shaped Single Voxel Using Half-Fourier 2D-Selective RF Excitations Based on a PROPELLER Trajectory

Martin Georg Busch1,2, Jrgen Finsterbusch1,2

1Dept. of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; 2Neuroimage Nord, Hamburg-Kiel-Lbeck, Germany

The application of two-dimensional spatially selective RF excitations based on a PROPELLER trajectory for single-voxel proton spectroscopy is presented. Side excitations are minimized by spatially selective refocusing pulses after each PROPELLER blade and adapted RF amplitude weighting. The combination of the half-Fourier method with every blade allows short echo times comparable to those obtained with conventional localization. The localization is tested on phantoms containing Cr and NAA.