Isotope Transport Studies and Shunt Pressure Measurements as a Guide to Shunt Function

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Abstract
Shunt function testing by radionuclide injection and shunt pressure measurement was performed in 312 cases. In our experience the test has a sensitivity of 92% and accuracy of 89%. The diagnostic value of the components of the test are discussed. The test is a safe and integral pan of the assessment of shunt function. The significance of shunt malfunction must of course be determined by clinical evaulation, measures of ventricular size by CAT scanning or ultrasound, and by continuous ICP recording. However the shunt function test combined with shunt pressure measurement is a safe and essential investigation of symptomatic shunt malfunction.

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