Joseph C Lee1,2, Nathan Better3,4. 1. Department of Medical Imaging, The Prince Charles Hospital, Chermside, QLD, 4032, Australia. joseph.lee@health.qld.gov.au. 2. Faculty of Medicine, University of Queensland, Herston, Australia. joseph.lee@health.qld.gov.au. 3. Department of Nuclear Medicine, Royal Melbourne Hospital, Grattan St, Melbourne, VIC, 3000, Australia. 4. Department of Medicine, University of Melbourne, Parkville, Australia.