Hydrocephalus CT
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Hydrocephalus CT On the Web |
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American Roentgen Ray Society Images of Hydrocephalus CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Syed Ahsan Hussain, M.D.[2]
Overview
Ventricular enlargement not entirely attributable to cerebral atrophy or congenital enlargement (Evans index >0.3). No macroscopic obstruction to CSF flow. 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.
CT
- IF a CT scan is useful for diagnosis:
- 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.
Hydrocephalus
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Hydrocephalus -
Intracerebral hemorrhage -
DWS: All of the black in the middle is cerebrospinal fluid and the brain matter is the rim of white along the outside of the skull.
