1. From the Department of Computer Science and Engineering, Sejong University, Seoul, Korea (J.T.K.); Molecular Imaging Program, National Cancer Institute (S.S., B.T., P.L.C.), Center for Interventional Oncology (S.X., B.J.W.), Urologic Oncology Branch, National Cancer Institute (P.A.P.), and Laboratory of Pathology, National Cancer Institute (V.M., M.M.), National Institutes of Health, 10 Center Dr, Room 1C341, Bethesda, MD 20892.