1 Department of Neurology, Rouen University Hospital, University of Rouen, 76031 Rouen cedex, France. Electronic address: ozlem.ozkul-wermester@chu-rouen.fr.
2 Department of Neurology, Rouen University Hospital, University of Rouen, 76031 Rouen cedex, France.
3 Department of Radiology, Rouen University Hospital, University of Rouen, 76031 Rouen cedex, France.