Figure 2.

Lesion frequency in the brain, brainstem and cervical spinal cord. (A) Lesion frequency maps for the whole cohort and for each disease phenotype. The CST are indicated in red contour. (B) Lesion frequency along the CST for each phenotype subcohort. For each axial slice (1-mm slice thickness), the CST lesion frequency median and interquartile range are represented by a solid line and shaded region, respectively. The CST segments are demarcated by dashed vertical lines. When interpreting this graph, it is important to keep in mind that the lesion frequencies are normalized by the CST volume.