Osman Ratib is Professor and Chairman of the Department of Radiology and Head of the Division of Nuclear Medicine at the University Hospital of Geneva. His previous positions include Professor and Vice-Chairman of the Department of Radiology at the University of California Los Angeles (UCLA), where he was responsible for co-ordinating the deployment of an enterprise-wide strategy and infrastructure for image management and communication. Dr Ratib’s clinical activities and areas of expertise include cardiovascular magnetic resonance (MR) and computed tomography (CT) imaging procedures, combined positron-emission tomography (PET)-CT imaging, and advance cardiovascular imaging. He is a board-certified cardiologist and radiologist with an international reputation in the fields of development of computer-aided diagnosis in cardiac imaging and picture archiving and communication systems (PACS). He is active in medical imaging research in Europe and is a member of several societies of computed radiology and telemedicine and the former President of the EuroPACS society. Dr Ratib has a degree in biophysics and a medical degree from the University of Geneva and a PhD in medical imaging from UCLA.