1. From the Departments of Nuclear Medicine (D.P., J.W., N.B.), Cardiology (A.A., S.J., N.B.), Cardiothoracic Surgery (P.A.), and Radiology (E.L., F.L.), Royal Melbourne Hospital, Parkville, Australia; Melbourne Private Hospital, Parkville, Australia (A.A., P.A., N.B.); and University of Melbourne, Parkville, Australia (A.A., N.B.).