Fig. 16From: The value of CSF flow studies in the management of CSF disorders in children: a pictorial reviewA 3-month-old boy with Dandy-Walker malformation with hydrocephalus. a 3D-DRIVE showing large posterior fossa, cerebellar hypoplasia, and stenosis of the aqueduct of Sylvius. b, c Phase-contrast sequence showing absence of flow through the aqueduct of Sylvius with no communication between the posterior fossa cyst and the posterior cervical subarachnoid spaceBack to article page