Abstract TP422: Comparison of Natural History and Effect of Intracranial Stent Placement Between Patients With Intra-Dural and Those With Sub-Arachnoid Intracranial Arterial Stenosis

Background: Intracranial stenosis can be located in intradural or subarachnoid space. It is unclear whether there are any differences in ipsilateral ischemic stroke risk, cerebral hemorrhage and de...