The independent predictive utility of computed tomography angiographic collateral status in acute ischaemic stroke
Ferdinand Miteff, Christopher R Levi, Grant A Bateman, Neil Spratt, Patrick McElduff, Mark W Parsons
BRAIN | OXFORD UNIV PRESS | Published : 2009
It is unknown whether collateral vessel status, as seen on computed tomography angiography, can predict the fate of penumbral tissue identified on perfusion computed tomography and thereby influence clinical outcome. We tested this hypothesis in consecutive patients who underwent perfusion computed tomography/computed tomography angiography within 6 h of anterior circulation stroke, who also had repeat perfusion/infarct volume imaging at 24 h, and modified Rankin Scale at 3 months. Collateral status was graded as good or reduced depending on the extent of contrast visualized distal to the occlusion on computed tomography angiography. 'Perfusion computed tomography mismatch' ratio was calcula..View full abstract
Hunter New England Health, Hunter Medical Research Institute, University of Newcastle, Australian Brain Foundation; the National Health & Medical Research Council of Australia.