1. Department of Neuroradiology (J.D.), Toulouse University Hospital.
2. INSERM, U1048 and Université Toulouse 3, I2MC, Toulouse (J.D.).
3. Calgary Stroke Program, Departments of Clinical Neurosciences and Radiology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary (A.M.D.).
4. Acute Stroke Unit (J.-M.O.), Toulouse University Hospital.
5. Clinical Investigation Center 1436 (J.-M.O.), Toulouse University Hospital.