5Shokeir AA. The diagnosis of upper urinary tract obstruction [ J ]. BJU Int,1999,83(8) :893 -900.
6Heneghanghan JP , Kim DH, Leder RA, et al. Compression CT urography: a comparison with IVU in the opacification of the collecting systemand ureter[ J]. J Comput Assist Tomogr,2001,25 (5) :343 - 347.
7Rohrschneider WK, Hoffend J, Becker K, et al. J ( 2001 ) Static - dynamic MR - urography. Comparison with excretory urography and scintigraphy in experimentally induced urinary tract obsteuction[ J].Radiology,2001,41 (2) :154 - 167.
8Dockery WD,Stolpen AH. State of the art magnetic resonance imaging of the kidneys and upper urinary tract[ J]. J Endourol, 1999,13(6) :417 -423.
9Louca G,Liberopoulos K. MR urography in the diagnosis of urinary tract obstruction [ J ]. J Eur Urol, 1999,35 ( 2 ): 102 - 108.
10Jung P, Brauers A, Nolte - Ernsting CA . MR urography enhanced by gadolinium and diuretics :a comparison with conventional urography in dagnosing the cause of ureteric obstruction [ J]. BUJ Int,2000,86 ( 5 ) :960 - 965.
