1. From the Department of Radiological Sciences (E.B.T., K.P., K.R., S.G., F.A., A.G., H.J.K., R.S.) and Department of Medicine, Division of Hematology/Oncology (A.L., C.A., A.J., B.W., E.B.G., J.W.G.), University of California Los Angeles, Los Angeles, Calif.