1. From the Clinical Fellow of the Department of Noninvasive Cardiovascular Imaging (O.B.), Chief of the Division of Noninvasive Cardiovascular Imaging Program and Chief of Nuclear Medicine and Molecular Imaging (M.D.C.), Brigham and Women's Hospital, Boston, MA. Dr Buckley is currently affiliated with Adelaide, Meath, and the National Children's Hospital, Tallaght, Dublin 24, Ireland.