Affiliation: | (1) Department of Radiology, Georgetown University Hospital, 3800 Reservoir Road, N. W., 20007 Washington, D.C.;(2) Department of Radiology, LAC-USC Medical Center, 3800 Reservoir Road N. W., 20007 Los. Angeles, California;(3) Department of Radiology, Emory University Hospital, 3800 Reservoir Road N. W., 20007 Atlanta, Georgia;(4) Interventional Radiology, L.W. Blake Hospital, 3800 Reservoir Road N. W., 20007 Bradenton, Florida, USA |