Abstract #2248

Longitudinal Relaxation times of Macromolecular Resonances at 9.4 T in Human Brain

Saipavitra Murali-Manohar¹, Andrew Martin Wright^1,2, Tamas Borbath¹, and Anke Henning¹

¹MRZ, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany, ²IMPRS for Cognitive and Systems Neuroscience, Eberhard-Karls University of Tübingen, Tuebingen, Germany

Longitudinal relaxation times of 13 Macromolecular (MM) resonances are reported for a gray matter rich voxel at 9.4 T for the first time. In addition, a sequence was optimized based on calculated magnetizations from Bloch simulations for combinations of inversion times using a DIR MC-semiLASER. The results from this work highlight the importance of accounting for specific peak relaxations due to the ranging T₁ relaxation times of the MM peaks.

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