1. From the Department of Radiology (G.A.U., N.B.S., C.C.R., R.M., L.M.C., S.K.L., J.S.L.), Department of Medical Physics (J.A.O., A.S.K.), Myeloma Service, Department of Medicine (E.S., C.O.L.), and Molecular Pharmacology Program (J.S.L.), Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; and Department of Radiology, Weill Cornell Medical College, New York, NY (G.A.U., C.C.R., J.S.L.).