Roger Gent has had an involvement in diagnostic ultrasound for more than 40 years, with particular interest in paediatric sonography and the physics of ultrasound. He has lectured on the physics of ultrasound for many years. He is the author or co-author of more than seventy articles, has received several awards from professional ultrasound bodies, is an Honorary Fellow of ASUM and was a member of the ASUM DMU Board of Examiners for twenty years. He was made a Member of the Order of Australia in 2009, for services to Paediatric Ultrasound.