Fig. 3

a FLAIR, Fluid-Attenuated Inversion Recovery, transverse (2013): Progression of the non-homogeneously hyper-intensive demyelinated lesion of the right frontal lobe, involving U-fibers. The lesion is well-defined to cortex, confluent with white mater, and irregular in shape. b T1w, T1-weighted MRI, transverse (2013): Hypointense irregular lesion at the rim of the right corner of the lateral ventricle in the right frontal lobe and several slightly hypointensive areas subcortically with no post-Gad enhancement. c T2w, T2-weighted MRI, transverse (2013): Irregular signal intensity within the lesion in the right frontal lobe. d DWI, Diffusion Weighted Imaging (2013): High signal intensity in the right frontal cortico-subcortical region and slightly increased signal in periventricular regions of both hemispheres