Fig. 8.

Correlation of microscopy derived FOD and fODF_2D amongst modalities in each of the three specimens. The top row depicts the correlation coefficients between the FOD from a stack of 6 PLI slices (dimensions: 0.4 × 0.4 × 0.36 mm) and the fODF_2D from the corresponding MRI slice (0.4 mm isotropic voxels). The histological FODs were obtained from the average of three myelin and three astrocytes stains combined (i.e. FOD_MA). The bottom row depicts the FODs from each modality for a voxel that is representative for the region of interest marked with the white rectangles above.