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FIG 2. Biexponential decay curves for ROIs in the WM in healthy volunteer 8. Left, Curve fits the measured points (diamonds). Middle and right, The signal intensity (dotted line) originates from two compartments: an FDC (thin solid line) and an SDC (thick bold line). ffast represents 74.1% of the total brain water. ADCfast and ADCslow values are 125.7 x 10–5 and 13.6 x 10–5 mm2/s, respectively In C, the semi-log representation of the evolution of signal intensity with b factor shows an obvious biexponential decay.
