Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany

Anna Stockbauer, Leonie Beyer, Maria Huber, Annika Kreuzer, Mattes Gross, Peter Bartenstein, Axel Rominger & Matthias Brendel

Department of Neurology, University Hospital, LMU Munich, Munich, Germany

Anna Stockbauer, Carla Palleis, Sabrina Katzdobler, Jonathan Vöglein, Adrian Danek, Johannes Levin & Günter U. Höglinger

German Center for Neurodegenerative Diseases (DZNE), Munich, Germany

Anna Stockbauer, Carla Palleis, Sabrina Katzdobler, Jonathan Vöglein, Robert Perneczky, Katharina Buerger, Nicolai Franzmeier, Adrian Danek, Johannes Levin, Günter U. Höglinger & Matthias Brendel

Munich Cluster for Systems Neurology (SyNergy), Munich, Germany

Carla Palleis, Sabrina Katzdobler, Robert Perneczky, Johannes Levin, Günter U. Höglinger, Peter Bartenstein & Matthias Brendel

Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany

Boris-Stephan Rauchmann, Robert Perneczky & Oliver Pogarell

Department of Neuroradiology, University Hospital of Munich, LMU Munich, Munich, Germany

Boris-Stephan Rauchmann

Nuclear Medicine Uni, IRCCS Ospedale Policlinico San Martino, Genoa, Italy

Silvia Morbelli, Matteo Bauckneht & Gianmario Sambuceti

Department of Health Sciences, University of Genoa, Genoa, Italy

Silvia Morbelli & Gianmario Sambuceti

National Institute of Nuclear Physics (INFN), Genoa Section, Genoa, Italy

Andrea Chincarini & Enrico Peira

Laboratory for Cognitive Neurology, Department of Neurosciences, KU Leuven, Louvain, Belgium

Rose Bruffaerts & Rik Vandenberghe

Neurology Department, University Hospitals Leuven, Louvain, Belgium

Rose Bruffaerts & Rik Vandenberghe

Biomedical Research Institute, Hasselt University, Hasselt, Belgium

Rose Bruffaerts

Experimental Neurobiology Unit, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium

Rose Bruffaerts

Department of Neurology and Department for Nuclear Medicine, University Medical Centre, Ljubljana, Slovenia

Milica G. Kramberger & Maja Trost

Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia

Maja Trost

Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospitals and NIMTLab, Geneva University, Geneva, Switzerland

Valentina Garibotto

Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland

Nicolas Nicastro

LANVIE (Laboratoire de Neuroimagerie du Vieillissement), Department of Psychiatry, Geneva University Hospitals, Geneva, Switzerland

Aurélien Lathuilière

Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands

Afina W. Lemstra

Department of Radiology & Nuclear Medicine, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands

Bart N. M. van Berckel

Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy

Andrea Pilotto & Alessandro Padovani

Parkinson’s Disease Rehabilitation Centre, FERB ONLUS - S. Isidoro Hospital, Trescore Balneario, BG, Italy

Andrea Pilotto

Department of Clinical Physiology in Linköping, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden

Miguel A. Ochoa-Figueroa & Anette Davidsson

Department of Diagnostic Radiology, Linköping University Hospital, Linköping, Sweden

Miguel A. Ochoa-Figueroa

Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden

Miguel A. Ochoa-Figueroa

Servicio de Medicina Nuclear, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain

Valle Camacho

Department of Neuroscience (DINOGMI), University of Genoa, Genoa, Italy

Enrico Peira, Matteo Pardini & Flavio Nobili

Clinical Neurology, IRCCS Ospedale Policlinico San Martino, Genoa, Italy

Matteo Pardini & Flavio Nobili

Centre of Age-Related Medicine (SESAM), Stavanger University Hospital, Stavanger, Norway

Dag Aarsland

Department of Old Age Psychiatry, Institute of Psychiatry, Psychology, and Neuroscience, King’s College, London, UK

Dag Aarsland

Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, Sheffield, S10 2HQ, UK

Robert Perneczky

Ageing Epidemiology (AGE) Research Unit, School of Public Health, Imperial College, London, UK

Robert Perneczky

Institut for Stroke and Dementia Research, University of Munich, Munich, Germany

Katharina Buerger

Department of Nuclear Medicine, University of Bern, Inselspital Bern, Bern, Switzerland

Paul Cumming & Axel Rominger

School of Psychology and Counselling and IHBI, Queensland University of Technology, Brisbane, Australia

Paul Cumming

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Anna Stockbauer and Matthias Brendel. The first draft of the manuscript was written by Anna Stockbauer, Leonie Beyer and Matthias Brendel and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.