Abstract #3993

Functional phosphorus spectroscopy of 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

Functional ³¹P spectroscopy has been investigated in several studies with greatly varying results, which may be due to the low sensitivity of the ³¹P nucleus. We have taken advantage of the high SNR at 9.4 T to acquire spectra from the human visual cortex under stimulation. Experiments were performed with different localization volumes, defined by saturation pulses. In spite of the excellent quality of the obtained data, no stimulation-related changes in metabolite concentrations or resonance frequencies could be detected.

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