An International Registry of the Wingspan™ Stent System for the Treatment of Intracranial Atherosclerotic Stenosis

Inclusion Criteria: * Symptomatic stenosis of one of those intracranial arteries: Internal carotid artery (ICA ), M1 segment of the MCA, V4 segment of vertebral artery, basilar artery * A Modified Rankin Score of ≤ 3 * A target vessel diameter between 2mm and ≤ 4.5mm * Length of the target lesion of ≤ 14 mm * Patient older than 40 years old Exclusion Criteria: * Patient previously stented at the target lesion * Intracranial stenosis related to disease such as: arterial dissection, Moya Moya disease, vasculitis, radiation induced vasculopathy or fibromuscular dysplasia * Complete occlusion of the artery on the imaging assessment * Contraindications to antithrombotic and/or anticoagulant therapies * Women who are pregnant or breast-feeding * Patient not likely to be available for follow-up * Patient protected by the law (safeguard of justice, supervision or trusteeship)