RISA (Radioiodinated Serum Albumin) Cisternographic Study in Diagnosis of the Hydrocephalus

ABSTRACT

Cisternography is isotopic demonstration of CSF dynamics, CSF rate & pathways, by scintillation scanning of the head after intrathecal administration of RISA. We have investigated the cisternographic findings in the hydrocephalus patients in view of the diagnosis and prognostic criteria. Cisternography provides the etiology & classification of hydrocephalus and reliable indication of CSF shunt operation. We found correlation between prolonged ventricular retention, delayed migration, inadequate clearance of the isotope and favorable response to shunting.