"T1: often no anomaly 6-9"
"T2/FLAIR: subcortical regions of hypointensity (dark white matter sign) 6-9 frequently in the occipital lobe and unilateral 13, cortical involvement is possible 13"
"DWI: often no anomaly 6-9"
"T1 C+ (Gd): leptomeningeal enhancement has been reported 9,13"