1. Department of Radiology, Azienda Ospedaliero Universitaria, Polo di Monserrato, Cagliari, Italy (C.O., R.S., L.S.).
2. Department of Cardiovascular Pathology, CVPath Institute, Gaithersburg, MD (R.V., K.K.).
3. Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN (V.N., A.L.).
4. Department of Radiology, Fondazion Monasterio/CNR, Pisa, Italy (F.C.).
5. Department of Cardiology, Azienda Ospedaliera Brotzu, Cagliari, Italy (A.B.).
6. Department of Pathology, Azienda Ospedaliero Universitaria, Ospedale San Giovanni di Dio, Cagliari, Italy (T.C., G.F.).
7. Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA (P.L.).