Gary Liu is an Australian trained vascular sonographer practising at Western Sydney Vascular Services. He obtained his Bachelor Degree of Applied Sciences in Medical Radiation Sciences from The University of Sydney, followed by a Diploma of Medical Ultrasonography (Vascular) from ASUM. He is currently enrolled as a higher degree research student at The University of Sydney. Gary holds memberships with the Australasian Sonographers Association (ASA) and American Lymphatic and Vein Society (ALVS). He has great interest in venous ultrasound and phlebology.  He actively works with many vascular surgeons and phlebologists in Australia, performing vein mapping with a keen interest in venous haemodynamics. Providing ultrasound guidance during endovenous procedures for the treatment of chronic venous disease is another area of expertise. He has presented original work and conducted workshops at both domestic and international conferences.