1 Department of Neuroradiology, University Hospital, Bordeaux, France (F.G.).
2 Department of Neuroradiology, Université Paris-Descartes-Sorbonne-Paris-Cité, IMABRAIN-INSERM-UMR1266, DHU-Neurovasc, Centre Hospitalier Sainte-Anne, Paris, France (O.N., M.E.).