1. From the CHU Montpellier Neuroradiology (V.C., P.M., K.L., I.M., J.F.V., C.R., A.B.), Montpellier, France; CHU Montpellier Neurology (I.M., D.M., C.H., C.A.), Montpellier, France; CHU Montpellier (P.F.P.), SARC, Ansesthesiology, Montpellier, France.