Third ventriculostomy for obstructive hydrocephalus: findings in radioisotope cisternography / 南方医科大学学报

ABSTRACT

<p><b>OBJECTIVE</b>To study the findings in radionuclide cisternography in patients with obstructive hydrocephalus following third ventriculostomy.</p><p><b>METHODS</b>Lumbar radionuclide cisternography was performed in 15 patients with obstructive hydro- cephalus before and after third ventriculostomy.</p><p><b>RESULTS</b>The postoperative cisternography identified radiopharmaceutical reflux into the lateral cerebral ventricles with delayed clearance for 24 h, similar to the findings by cisternography of communicating hydrocephalus.</p><p><b>CONCLUSION</b>The cause of ventricular radiopharmaceutical reflux is not yet understood, possibly in association with the reversal of normal cerebrospinal fluid flow though the fenestration on the third ventrical floor.</p>