Alexis Guédon1,2,3, Michael Eliezer4, Emmanuel Houdart4,5. 1. Department of Neuroradiology, Lariboisière Hospital, 2 rue Ambroise Paré, Paris, France. alexis.guedon@aphp.fr. 2. University of Paris Cité, Paris, France. alexis.guedon@aphp.fr. 3. INSERM UMR_S 1140, University of Paris Cité, Paris, France. alexis.guedon@aphp.fr. 4. Department of Neuroradiology, Lariboisière Hospital, 2 rue Ambroise Paré, Paris, France. 5. University of Paris Cité, Paris, France.