5Rajaie Esfkahkni M, Momeni. A. Comparison of uhrason- gography and intravehous urohraphy in the screening and diag- nosis of hematuriav Causes[ J] .Urol J. 2006 3 ( 1 ): 54-60.
6Kim H J, Lira JW, Lee DH, et al Differentiation of malig- nant from begnign ureteral obstructions: assessment using transrectal and color Doppler urtrason ography [ J ]. J Uhra- sound Med, 2007, 26(9) : 1129-1136.
