Hydrocephalus diagnostic study of choice

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Syed Ahsan Hussain, M.D.[2]

Diagnostic Study of Choice

Study of choice

• MRI is the gold standard test for the diagnosis of hydrocephalus.
• Ventricular enlargement not entirely attributable to cerebral atrophy or congenital enlargement (Evans index >0.3).
• No macroscopic obstruction to CSF flow.

At least one of the following supportive features: Enlargement of the temporal horns of the lateral ventricles not entirely attributable to hippocampus atrophy.

• Callosal angle of 40º or greater.
• Evidence of altered brain water content, including periventricular signal changes on CT and MRI not attributable to microvascular ischemic changes or demyelination.
• An aqueductal or fourth ventricular flow void.