1. Cardiovascular Imaging Program, Departments of Medicine and Radiology, Brigham and Women’s Hospital, Boston, MA (A.C.d.A.H.d.S., H.J.H., L.M., C.B., M.H., K.S., J.H., S.D., R.B., V.R.T., M.F., M.-A.P., M.F.D.C.).
2. Spectrum Dynamics Medical, Caesarea, Israel (C.B., N.R.).
3. Instituto Cardiovascular de Buenos Aires, Buenos Aires, Argentina (A.M.).
4. INVIA Medical Imaging Solutions, Ann Harbor‚ MI (A.P.-R.).
5. Heart and Vascular Institute, University of Pittsburgh Medical Center, Pittsburgh, PA (P.S.).
6. Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA (G.T.G.).