1. Department of Circulation and Medical Imaging, St Olav’s Hospital, Norwegian University of Science and Technology (NTNU), Postboks 8905, 7491 Trondheim, Norway
2. Institute of Cardiovascular & Medical Sciences, University of Glasgow G12 8QQ, UK
3. Division of Imaging Sciences and Biomedical Engineering, Department of Biomedical Engineering, Kings College London SE1 7EH, UK
4. L'Institut du Thorax, Inserm, CNRS, UNIV Nantes 44000, France