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Signal evolution of the resonance at 1.4 ppm. The upper row (A) shows the estimated signal amplitudes of the 1.4 ppm resonance for averaged voxels over from inside the brain for all volunteers (n = 7) and different time points as well as exemplary averaged spectra for different time points from a single volunteer. The lower row (B) shows the corresponding signal amplitudes and spectra for tissue with a high skull tissue fraction.
