1. Department of Nuclear Medicine, Montpellier University Hospital, Montpellier, France
2. Department of Nuclear Medicine, Purpan University Hospital, Toulouse, France
3. PhyMedExp, INSERM, CNRS, Montpellier University, Montpellier Cedex, France
4. ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France