Figure 1
From: Types of naming errors in chronic post-stroke aphasia are dissociated by dual stream axonal loss
(A) DKI allows for voxel-wise estimation of the number of fiber directions through the calculation of a kurtosis diffusion orientation distribution function (dODF), while the dODF estimated from DTI provides only a single direction. (B) The AWF is the voxelwise ratio of intra-axonal water (orange) to the total water content (orange + blue). (C) (Left) The ILF estimated using kurtosis-based deterministic tractography with streamlines color-coded according to directionality. (Right) The ILF color-coded according to the underlying AWF values. Augmenting tractography with microstructural information paints a more complete picture of the underlying environment.
