1 Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia. Electronic address: ravindrank@student.unimelb.edu.au.
2 Department of Pathology, The Royal Melbourne Hospital, Parkville, VIC, Australia.
3 Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia; Department of Radiology, The University of Melbourne, Parkville, VIC, Australia.