Francesco Grussu, Torben Schneider, Richard L. Yates, Mohamed Tachrount, Hui Zhang, Daniel C. Alexander, Gabriele C. DeLuca, and Claudia A. M. WheelerKingshott NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Institute of Neurology, London, England, United Kingdom, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England, United Kingdom, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, London, England, United Kingdom, Department of Computer Science and Centre for Medical Image Computing, University College London, London, England, United Kingdom