1. Division Heart & Lungs, Department of Cardiology, University Medical Center Utrecht, Utrecht University , Heidelberglaan 100, 3508, GA, Utrecht , The Netherlands
2. Turku PET Centre, University of Turku and Turku University Hospital , Kiinamyllynkatu 4-8, 20520 Turku , Finland
3. Department of Cardiology, University of Groningen, University Medical Center Groningen , Hanzeplein 1, 9700RB Groningen , The Netherlands
4. Division of Imaging Sciences and Biomedical Engineering, King's College London, St Thomas' Hospital , King's College London Strand, London, WC2R 2LS , UK