Professor Rolf Jenni has been Director of the Echocardiography Laboratory at the University Hospital, Zurich, Switzerland, since 1987 and is a Professor of Cardiology. His research has focused on non-invasive and invasive flow measurements in humans including coronary flow reserve measurements. In addition, clinical research has focused on Congenital Heart Disease and cardiomyopathies. Professor Jenni has published over 300 manuscripts and book articles.