Bernhard L Gerber1
, Subha V Raman2
, Krishna Nayak3
, Frederick H Epstein4
, Pedro Ferreira5
, Leon Axel6
and Dara L Kraitchman7 
1Department of Cardiovascular Diseases, Cliniques Universitaires St Luc, Université Catholique de Louvain, Brussels, Belgium
2Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Ohio State University, Columbus, OH, USA
3Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA, USA
4Departments of Radiology and Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
5National Heart and Lung Institute, Imperial College, London, UK
6Department of Radiology, New York University Medical Center, New York, NY, USA
7Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University, School of Medicine, Baltimore, MD, USA