1. Departments of Medicine and Radiology, University Hospitals, Harrington Heart & Vascular Institute, Case Western Reserve University, Cleveland OH (A.U.C., R.G., T.S., S.R.).
2. Division of Diagnostic and Interventional Radiology, University Hospital Policlinico “Tor Vergata”, Roma, Italy (A.U.C.).
3. Department of Radiology, NorthShore University HealthSystem, Evanston, IL (I.K., R.R.E.).
4. University of Chicago Pritzker School of Medicine, IL (I.K.).
5. Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL (R.R.E.).
6. Beth Israel Deaconess Hospital, Harvard Medical School, Boston, MA (G.M.).
7. Division of Mechanical and Biomedical Engineering, Ewha Womans University, Seoul, South Korea (T.S.).