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AJNR: American Journal of Neuroradiology logoLink to AJNR: American Journal of Neuroradiology
. 1998 Nov-Dec;19(10):1943-6.

Reversible ischemia determined by xenon-enhanced CT after 90 minutes of complete basilar artery occlusion.

E I Levy 1, A M Scarrow 1, E Kanal 1, G Rubin 1, H Yonas 1, L Kirby 1
PMCID: PMC8337725  PMID: 9874552

Abstract

Intraarterial thrombolytic therapy decreases mortality in the treatment of acute basilar artery occlusion. An acute decrease in cerebral blood flow (CBF) (<12 mL/100 g per minute) has been reported to invariably result in infarction. We report a case of acute basilar artery occlusion, recanalized within 90 minutes, with reversal of CBF of less than 6 mL/100 g per minute. After reperfusion, areas with persistent CBF of 6 mL/100 g per minute resulted in infarctions on subsequent CT studies. Parenchymal viability is possible after 90 minutes of posterior CBF of 6 mL/100 g per minute.

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