1. Department of Cardiology, Leiden University Medical Center, The Netherlands (J.H.K., S.E.v.R., P.v.d.R., A.R.v.R., J.W.J., N.A.M., J.K., J.J.B.).
2. Division of Image Processing, Department of Radiology, Leiden University Medical Centre, The Netherlands (P.H.K.).
3. Medis Medical Imaging, Leiden, The Netherlands (P.H.K.).
4. Department of Radiology, Leiden University Medical Center, The Netherlands (J.H.C.R.).
5. Netherlands Heart Institute, Utrecht, The Netherlands (J.W.J.).
6. Department of Cardiology, Columbia University Irving Medical Center/New York-Presbyterian Hospital and Cardiovascular Research Foundation, NY (M.B.L.).
7. Turku PET Centre, Turku University Hospital and University of Turku, Finland (J.K.).
8. Heart Center, Turku University Hospital and University of Turku, Finland (J.J.B.).