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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: J Child Neurol. 2015 Jul 16;31(3):309–320. doi: 10.1177/0883073815592222

Figure 5. Communicating hydrocephalus. A–D: mild idiopathic communicating hydrocephalus.

Figure 5

Sagittal T1 MRI image (AS) showing open aqueduct and absence of posterior fossa crowding. Axial T2 images (B–D) showing rounded, mildly dilated ventricles with generous extraaxial space. E–H: severe idiopathic communicating hydrocephalus. Sagittal T1 image (E) showing enlarged aqueduct, 4th ventricle, and excess fluid within the posterior fossa. Axial T2 images (E–H) demonstrate marked ventriculomegaly with transependymal flow.