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Abstract #3013

MASE-sLASER, a short TE matched chemical shift displacement error sequence for single voxel spectroscopy at ultrahigh field

Seyedmorteza Rohani Rankouhi1, Hadrien Dyvorne2, Donghyun Hong1, Priti Balchandani2, and David Norris3

1Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, Germany, 2Translational and Molecular Imaging Institute, New York, NY, United States, 3Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Netherlands

Conventional sLASER sequence has different Chemical Shift Displacement Error (CSDE) in one of the three slice selection directions. In this work, a short TE matched CSDE sLASER sequence (MASE-sLASER) has been implemented using the novel MASE pulses for single voxel spectroscopy at 7T. The matched low CSDE of this sequence in all three directions provides more exact representation of the metabolites in the imaged voxel. The short duration of the MASE pulses with acceptable bandwidths have made it possible to achieve a TE as short as 28 ms for the MASE-sLASER sequence despite having one more RF pulse than the conventional sLASER sequence.

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