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MRI of Hydrocephalus and CSF Velocity Imaging

Chapter

Abstract

Cerebrospinal fluid (CSF) is produced at a rate of 500 ml/day by the choroid plexus within the ventricular system [1]. Normally, it flows out the foramina of Lushka and Magendie of the fourth ventricle into the subarachnoid space (SAS). From there, the CSF normally flows up over the convexities to be absorbed by the arachnoidal granulations and villi on either side of the superior sagittal sinus (Fig. 46.1). Obstruction to the outflow of CSF leads to back up and ventricular enlargement or “hydrocephalus” [2]. If the obstruction is between the choroid plexus and the outlet foramina of the fourth ventricle, it is called “obstructive” hydrocephalus.

Keywords

Fourth Ventricle Normal Pressure Hydrocephalus Aqueductal Stenosis Normal Pressure Hydrocephalus Idiopathic Normal Pressure Hydrocephalus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of RadiologyUC San Diego Health SystemSan DiegoUSA

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