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Abstract #2910

Comparison of short echo-time spiral MRSI and single-voxel spectroscopy in the human brain at 3T

Dinesh K Deelchand1 and Pierre-Gilles Henry1
1Center for Magnetic Resonance Research, Radiology, University of Minnesota, Minneapolis, MN, United States

The goal of this study was to compare the spectral quality and metabolite concentrations obtained with short echo-time 2D spiral MRSI and single-voxel spectroscopy (SVS) in the human brain at 3T. Semi-LASER was used for localization (SVS) or pre-localization (MRSI). MRSI was acquired in a transverse slice through the posterior cingulate cortex (PCC), and SVS was from PCC. Results show comparable spectral quality between acquisitions. Differences in concentrations between the two techniques is likely due to the MRSI point-spread function. This study shows feasibility of acquiring high-quality spiral MRSI data similar in spectral quality to SVS within a few minutes.

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