1Institue of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland, 2Department and Policlinic of Internal Medicine, University Hospital Zurich, Zurich, Switzerland, 3Institue for Biomecical Engineering, University and ETH Zurich, Zurich, Switzerland, 4University Heart Center Leipzig, Leipzig, Germany, 5German Heart Institute Berlin, Berlin, Germany, 6Department of Cardiology, Pneumology, Angiology and Intensive Care Medicine, University Hospital RWTH Aachen, Aachen, Germany, 7Department of Cardiology, University Heart Center, Universitiy Hospital Zurich, Zurich, Switzerland