1. From the Imaging Institute (D.E.S., R.D.W., E.M.R.) and Glickman Urological and Kidney Institute (Y.W., H.T., S.C.C., E.M.R.), Cleveland Clinic, 9500 Euclid Ave, L10, Cleveland, OH 44195; Department of Urology, First Hospital of Jilin University, Changchun, China (Y.W.); and Department of Urology, Tokyo Medical and Dental University, Tokyo, Japan (H.T.).