Margaux Roques1, Amaury De Barros2, Fabrice Bonneville3. 1. Department of Neuroradiology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France. margaux.roques@gmail.com. 2. Department of Neurosurgery, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France. 3. Department of Neuroradiology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France.