1. Department of Neuroradiology and MRI, University Hospital of Grenoble-IFR1, Grenoble, France
2. Inserm, U836, Grenoble, France
3. Université Joseph Fourier, Grenoble Institute of Neurosciences UMR-S836, Grenoble, France
4. Department of Neurology, University Hospital of Grenoble, Grenoble, France