1Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway, 2St. Olavs University Hospital, Trondheim, Norway, 3Department of Radiology, The Royal Melbourne Hospital, Melbourne, Australia, 4Department of Radiology, NYU Langone Medical Center, New York, NY, United States, 5Department of Radiology, Austin Health, Melbourne, Australia, 6Department of Endocrinology, Austin Health, Melbourne, Australia, 7Florey Neuroscience Institute, Melbourne, Australia, 8Department of Endocrinology, The University of Melbourne, Melbourne, Australia, 9Departments of Radiology and Surgery, The University of Melbourne, Melbourne, Australia