Table e-2. Coefficients of the mono-exponential function fitted per MR measure and WM area
MR, magnetic resonance; WM, white matter; FA, fractional anisotropy; MD, mean diffusivity; AD, axial diffusivity; RD, radial diffusivity; MTR, magnetic transfer ratio; Cr, creatine; NAA, N-acetyl aspartate; Cho, choline; Ins, myo-inositol. Coefficients a and b are given in 10-5 mm2/s for MD, AD and RD, in ms for T2, and in mM for metabolite concentrations. Coefficient tau is given in years.
Quantitative MR measures versus age per white matter area. MD, AD and RD are given in 10-5mm2/s, in ms for T2 in ms and metabolite concentrations in mM.