Ryo Torii's main research focus is the application of integrated computational biomechanics and in vivo imaging to problems in clinical science and practice, particularly in cardiovascular area. The scientific motivation behind his works is to understand the roles of mechanical factors in the cardiovascular system in health, disease and post-operative conditions especially in relation to atherosclerosis, aneurysm and valvular diseases. Practically, he has been developing computational methods and tools to augment the information from medical imaging and other means of measurement, to underpin clinical research and practice.