Jean Nicolas Dacher is a cardiac radiologist and a Professor of Radiology and Medical Imaging appointed by the University Hospital and the Centre Hospitalier et Universitaire of Rouen-Normandie in France. He is the Chief of the Department of Radiology and the Head of the cardiac imaging unit including Cardiac CT and MRI facilities. He is also a member of the Research INSERM unit UMR1096 (Pharmacology and endothelial/myocardial dysfunction). Cardiac Imaging was a high priority of the University Hospital of Rouen since many years considering the advent and development of Transcatheter aortic valve implantation (First in man implantation was performed in Rouen in 2002 by Alain Cribier and his interventional cardiology team). Jean Nicolas Dacher wrote approximately 250 articles and recently co authored a text book of cardiac imaging in French under the auspices of the National Societies of cardiology and radiology.