Tenacity of Collateral Perfusion in Proximal Cerebral Arterial Occlusions 6-12 h after Onset.

BACKGROUND Clinical trials have shown that benefits of endovascular recanalization (EVT) for acute ischemic stroke patients with sizable penumbral tissues seems plausible even beyond 6 h after their last seen normal (LSN). Persistency of ischemic penumbra remains unclear in delayed periods. METHODS From a prospective stroke registry database, we… (More)