1. Laboratory of Functional and Metabolic Imaging, Institute of the Physics of Biological System; Ecole Polytechnique Fédérale de Lausanne; Lausanne Switzerland
2. Department of Radiopharmacy; ETH Zurich; Switzerland
3. Department of Radiology; University of Lausanne; Lausanne Switzerland
4. Department of Clinical Neuroscience; Centre Hospitalier Universitaire Vaudois; Lausanne Switzerland
5. Department of Radiology; University of Geneva; Geneva Switzerland