Benign Oligemia in Subacute Stage Is Associated with Borderzone Infarction in Stroke Patients Caused by Intracranial Large Artery Disease.

Background: CT perfusion (CTP) imaging provides quantitative evaluation of cerebral perfusion flow and volume. Our previous findings showed that benign oligemia caused by intracranial large artery disease may be existent in subacute stroke.

Aims: We aimed at comparing the topographic patterns and clinical outcome of stroke patients with and without persistent benign oligemia as defined by CTP imaging.