Subintimal recanalization for non-acute occlusion of intracranial vertebral artery in an emergency endovascular procedure: A case report

Figure 4 The course of microwire in the subintima and microcatheter angiography. A: The microwire entered the posterior inferior cerebellar artery (orange arrows); B: The microwire advanced in a sigmoid curve in the subintima (orange arrows) and the microcatheter angiography identified the subintimal dissection (orange dashed arrows); C: The subintimal microwire kept advancing in a spiral shape (orange arrows) and the microcatheter angiography showed the microwire entered the anterior inferior cerebellar artery (orange dashed arrows). AP: Anterior-posterior; L: Lateral.