Quantitative Multiregional CSF Kinetics Using Serial, Metrizamide Enhanced Computed Tomography

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Abstract
Two rhesus monkeys studied by serial metrizamide (Amipaque8) enhanced computed tomography (CT) imaging were used to quantitatively analyze cerebrospinal fluid (CSF) kinetics in multiple anatomical regions. Time—density curves were generated for the cisterna magna, suprasellar cistern, quadrigeminal cistern, and sylvian fissure. If clinical, biochemical, and routine static CT scanning indicate a profile suggesting normal pressure hydrocephalus, then CSF kinetics may be quantitatively and dynamically studied by CT imaging with metrizamide enhancement. This multiregional approach may be applied in an attempt to accurately distinguish normal pressure hydrocephalus from cerebral atrophy as a means of predicting which patients will likely profit from surgical diversionary shunting.

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