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Sodium (23Na) MRI at 1.5 (A), 3 (B), and 7 T (C). Images show that the SNR increases markedly with B0. Sequence parameters: TE (1.5 and 3 T), 0.2 milliseconds; TE (7 T), 0.5 milliseconds; TR, 50 milliseconds; flip angle α, 77 degrees; nominal spatial resolution, 4 mm3; acquisition time, 10 minutes 50 seconds. Reused with permission from John Wiley & Sons, Kraff et al.36
