@article {Levy1943, author = {E I Levy and A M Scarrow and E Kanal and G Rubin and H Yonas and L Kirby}, title = {Reversible ischemia determined by xenon-enhanced CT after 90 minutes of complete basilar artery occlusion.}, volume = {19}, number = {10}, pages = {1943--1946}, year = {1998}, publisher = {American Journal of Neuroradiology}, 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.}, issn = {0195-6108}, URL = {https://www.ajnr.org/content/19/10/1943}, eprint = {https://www.ajnr.org/content/19/10/1943.full.pdf}, journal = {American Journal of Neuroradiology} }