Inclusion Criteria- Age 18 and older (i.e., candidates must have had their 18th birthday)
- Groin puncture carried out within 8 hours of first symptoms
- Neuroimaging demonstrates large vessel proximal occlusion (distal ICA through MCA bifurcation, M1 or M2)
- Consenting requirements met according to French laws.
- With or without intravenous thrombolysis
Exclusion Criteria- Absence of large vessel occlusion on non-invasive imaging
- Known or suspected pre-existing (chronic) large vessel occlusion in the symptomatic territory
- Suspected pregnancy; if, a woman is of childbearing potential, a urine or serum beta human chorionic gonadotropin (betaHCG) test is positive.
- Severe contrast medium allergy or absolute contraindication to iodinated agents.
- Patient has severe or fatal comorbidities that will likely prevent improvement or follow-up or that will render the procedure unlikely to benefit the patient.
- Acute ischemic stroke involving posterior circulation (vertebrobasilar occlusion)
- Angiographic evidence of carotid dissection or tandem cervical occlusion or stenosis requiring treatment.
- Patients benefiting from a legal protection
- Non-membership of a national insurance scheme
- Opposition of the patient or (in case of inclusion as a matter of urgency) of the trustworthy person