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.