1 Department of Neurology, University Hospital of Toulouse, CHU Pierre Paul Riquet, Allée Jean Dausset, Toulouse cedex 9, Toulouse 31059, France; ToNIC, Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, France. Electronic address: gollion.c@chu-toulouse.fr.
2 ToNIC, Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, France; Department of Neuroradiology, University Hospital of Toulouse, Toulouse, France.
3 Department of Neuroradiology, University Hospital of Toulouse, Toulouse, France.
4 Department of Neurology, University Hospital of Toulouse, CHU Pierre Paul Riquet, Allée Jean Dausset, Toulouse cedex 9, Toulouse 31059, France.
5 Department of Neurology, University Hospital of Toulouse, CHU Pierre Paul Riquet, Allée Jean Dausset, Toulouse cedex 9, Toulouse 31059, France; ToNIC, Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, France.