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Abstract #3508

Quantitative Sodium MRI with Fluid Suppression in the Knee Joint at 3T & 7T

Guillaume Madelin1, Gregory Chang1, Alexej Jerschow2, Ravinder R. Regatte1

1Radiology Department, New York University Medical Center, New York, NY, United States; 2Chemistry Department, New York University, New York, NY, United States

This study demonstrates the feasibility of quantitative sodium MRI with fluid suppression in vivo in the knee joint at 3T and compares the results with that of 7T on the same 4 asymptomatic healthy volunteers. Two inversion recovery based methods (with a rectangular and an adiabatic pulse) for suppressing the fluids are also compared and show a good agreement at both fields. These preliminary results at 3T, despite their lower SNR and the small number of volunteers in this study, show slightly lower sodium concentration measurements but are still in good agreement with the data at 7T.