Figure 3.

A type IIIB lesion in a patient with MS. (A) Axial T2-FLAIR brain MRI shows multiple demyelinating lesions (arrows) in the bilateral periventricular white matter and one in the right subcortical white matter. (B) All of the lesions show no enhancement on the CE T1WI, including one lesion involving the right periventricular white matter (arrow). (C–E) The lesion (arrow) is hyperintense on the DWI, hyperintense on the ADC map, and hypointense on the eADC map, indicating residual vasogenic edema and the T2 shine-through effect. The hyperintensity on the DWI disappeared on follow-up MRI three months later (not shown).