1. Centre for Medical Image Computing and Department of Computer Science, University College London, London WC1V 6LJ, UK
2. Neuroradiology Unit and CERMAC, IRCCS Ospedale San Raffaele, Vita-Salute San Raffaele University, 20132 Milan, Italy
3. Department of Neurosurgery and Gamma Knife Radiosurgery, IRCCS Ospedale San Raffaele, Vita-Salute San Raffaele University, 20132 Milan, Italy
4. Pathology Unit, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
5. Philips Healthcare, 20126 Milan, Italy
6. Clinical Imaging Sciences Centre, Brighton and Sussex Medical School, Brighton BN1 9RR, UK
7. Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff CF24 4HQ, UK