Fig. 3
From: Role of diffusion-weighted imaging in differentiation between posterior fossa brain tumors
Typical MRI features of a medulloblastoma in a 3-year-old child who presented with chronic headache 5 months ago. a T1WI shows midline vermian hypointense mass in the posterior fossa causing anterior displacement of the fourth ventricle. b T2WI: the mass appears isointense to slightly hyperintense. Few T1WI hypointense and T2WI hyperintense foci suggestive of cystic components. c Post-contrast T1WI axial image showing intense enhancement of the mass. d Low signal on apparent diffusion coefficient images (ADC), features suggestive of restricted diffusion corresponding to hypercellularity of the mass