The group FWHM of the diffusion ODF from all eight subjects at five b-values.

<p>(*) indicates statistically significant differences between groups (<i>p</i> < 0.001).</p

The fiber ODFs of the DWI data from different b-values in the centrum semiovale.

<p>The b-values of (A)-(E) = 650, 1000, 1500, 2000, 2500 s/mm², respectively. The top-left figure indicates the centrum semiovale by a red rectangle. The three specially marked voxels in (a)-(c) are given a closer look in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0120773#pone.0120773.g014" target="_blank">Fig. 14</a>.</p

The FWHM of the diffusion ODF from S1 at five b-values.

<p>(a) Distribution of the diffusion ODF measured by SPFI for S1 at five b-values. The x-axis shows the colatitudes, where 0° indicates that the orientation is parallel to that of the principal direction. (b) The FWHM of the ODF profile measured in (a). (*) indicates statistically significant differences between groups (<i>p</i> < 0.001).</p

The angular difference in the diffusion ODF obtained with SPFI between each pair of b-values.

<p>(a) The angular difference for one-directional situations.(b) the angular difference for two-directional situations. The color in the grid indicates the angular difference in the ODF between the two b-values in the x-axis and the y-axis.</p

The corpus callosum used to calculate the FWHM.

<p>The corpus callosum used to calculate the FWHM.</p

The diffusion ODFs of three voxels (those marked in Fig. 11A-C) at different b-values.

<p>The three voxels contain different numbers of fiber directions. Each row illustrates the ODFs of the same voxel at different b-values. The yellow sticks represent the principal peak(s) of the ODFs.</p

The group FWHM of the fiber ODF from all eight subjects at five b-values.

<p>The group FWHM of the fiber ODF from all eight subjects at five b-values.</p

The relationship between the SNR and the b-value.

<p>(a) The SNR of corpus callosum. (b) The SNR of centrum semiovale.</p

The angular difference in the fiber ODF obtained with CSD between each pair of neighboring b-values.

<p>(a) The angular difference for one-directional situations. (b) The angular difference for two-directional situations.</p

The angular difference in the fiber ODF obtained with CSD between each pair of b-values.

<p>(a) The angular difference for one-directional situations. (b) The angular difference for two-directional situations. The color in the grid indicates the angular difference in the ODF between the two b-values in the x-axis and the y-axis.</p