Fig. 5

Diagrammatic illustration of MRI changes in acute cerebellar syndrome (a) and reversible acute cerebellar toxicity (REACT) syndrome (b). In acute cerebellar syndrome, MRI may show reversible diffuse white matter supra- and infratentorial T2/FLAIR hyperintensities (a, arrows). In REACT syndrome, the typical MRI characteristics are restricted diffusion involving the cerebellar cortices (b, stars) sparing the cerebellar deep nuclei and white matter as well as the supratentorial compartment