FIG 1. Images from the case of a 66-year-old man with fragile X premutation.

A–C, Axial view T2-weighted images show high signal intensity in white matter inferior and lateral to the deep cerebellar nuclei. Only slightly increased signal intensity can be seen in the MCPs.

D, Coronal view T1-weighted contrast-enhanced image shows white matter regions of low signal intensity that do not show enhancement.