RESUMO
The Doppler ultrasonic flowmeter has been used to assist in the removal of five intracranial arteriovenous malformations. The instrument is generally available in most institutions, and is simple and easy to use. It provides a means for locating and confirming the boundaries of a malformation, distinguishing feeding arteries from arterialized draining veins, determining whether the artery is going to the malformation or normal brain, and evaluating the completeness of obliteration.
Assuntos
Efeito Doppler , Malformações Arteriovenosas Intracranianas/cirurgia , Física , Ultrassonografia , Adulto , Velocidade do Fluxo Sanguíneo , Artérias Cerebrais , Humanos , Masculino , Fenômenos FísicosRESUMO
In a patient presenting with the clinical features of normal pressure hydrocephalus, a membranous obstruction of the aqueduct of Sylvius was demonstrated by combined air encephalography and contrast ventriculography. Ventriculoatrial shunting resulted in clinical improvement without significant change in ventricular size.