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FIG 6. Relative change in FA, RA, and Am as a function of a change in one of the eigenvalues 
1, 2, and 3. The change is defined as a factor times the original value; the factor is displayed on the x-axis. The relative change is shown for three input settings, corresponding to adult white matter (top row), neonatal white matter (middle row), and a case close to isotropic (bottom row). The gray area is the area in which the function is valid, that is where 1 > 2 > 3.
