Fig. 1.

Surface of CC and the illustration of sampled voxels. The red line on the right side of the figure is the midline of the CC, blue stars represent voxels within CC, and pink, yellow, as well as green crosses represent surface vertices. In the direction perpendicular to the midline and pointing to each vertex, voxels within pink, yellow, and green areas are projected to the vertices with the corresponding colors. Mean index (FA, MD....) of projected voxels is assigned to the vertex for later statistics.