Collateral vessels on CT angiography predict outcome in acute ischemic stroke.
Maas MB, Lev MH, Ay H, Singhal AB, Greer DM, Smith WS, Harris GJ, Halpern E, Kemmling A, Koroshetz WJ, Furie KL. Collateral vessels on CT angiography predict outcome in acute ischemic stroke. Stroke. 2009 Sep; 40(9):3001-5.