Yin Peng Goh1, Kenneth K Lau2. 1. Department of Diagnostic Imaging, Monash Medical Centre, Southern Health, 246, Clayton Road, Clayton, VIC 3168 Australia. 2. Department of Diagnostic Imaging, Monash Medical Centre, Southern Health, Clayton, VIC Australia ; Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC Australia.