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Abstract #3994

T1 values of phosphorus metabolites in the human visual cortex at 9.4 T

Rolf Pohmann1, Sathiya Raju1,2, and Klaus Scheffler1,3

1Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, 2Furtwangen University, Schwenningen, Germany, 3Biomedical Magnetic Resonance, University Tübingen, Tübingen, Germany

Ultra-high field has the potential to improve the quality of 31P spectroscopic applications due to the increased SNR and spectral dispersion. In addition, previous studies have reported a decreasing T1 with increasing field strength, which would further contribute to an improved quantification quality. In this study, we have measured the longitudinal relaxation time T1 in the visual cortex of healthy human subjects at 9.4 T, using an inversion-recovery technique. The values obtained were consistently lower than published data at 7 T, confirming observations of a decreasing T1 with field strength.

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