Early venous filling and controlled hyperventilation in cerebral angiography.
Controlled hyperventilation is a useful adjunct to angiography of tumours and inflammatory disease, giving increased demonstration of normal penetrating arteries and abnormal vessels. This shunting effect commonly causes early filling of the deep ependymal veins which should not be mistaken for early venous return due to tumour. While the effect could theoretically mask early venous flow secondary to tumour, this has not been our experience.
D002245:Carbon Dioxide / Q000097:blood; D002533:Cerebral Angiography / Q000379:methods*; D002648:Child; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging; D010313:Partial Pressure; D012121:Respiration, Artificial
D002245:Carbon Dioxide