Inclusion Criteria:  Age ≥ 18 years Indication for treatment with Mechanical Thrombectomy Imaging on admission (Scanner and/or Magnetic Resonance Imaging (MRI)) showing occlusion of a large intracranial artery intracranial artery (anterior, middle, posterior cerebral artery, basilar artery, vertebral vertebral artery) Health insurance coverage Obtaining the patient's consent  Exclusion Criteria:  Patient with a serious intercurrent pathology impacting the vital prognosis in the short term and making it impossible to follow up at 3 months. Patients for whom follow-up will be impossible (foreign tourists) Patients of legal age (under guardianship, under curatorship, deprived of liberty)