Sven Haller1,2,3, Frederik Barkhof4,5. 1. Affidea CDRC - Centre Diagnostique Radiologique de Carouge, Geneva, Switzerland. sven.haller@me.com. 2. Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden. sven.haller@me.com. 3. University of Geneva, Medical Faculty, Geneva, Switzerland. sven.haller@me.com. 4. Department of Radiology & Nuclear Medicine, VU University Medical Centre, Amsterdam, the Netherlands. 5. Department of Neuroradiology, Institute of Neurology, University College London, London, UK.