Abstract #3994

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

Rolf Pohmann¹, Sathiya Raju^1,2, and Klaus Scheffler^1,3

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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