3Richard N, Alan B. Anomalies of the ureter[J]. Campbells Urol, 2001,7(2): 1739-1743.
4Groshar D, Wald M. Quantitative SPECT of ^99mTc-DMSA uptake in kidneys of infants with unilateral ureteropelvic junction obstruction: assessment of structural and functional abnormalities[J]. J Nucl Med, 1999,40 (7):1111-1115.
5Khaira H S, Platt J F. Helical computed tomography for identification of crossing vessels in ureteropelvic junction obstruction-comparison with operative findings [J]. Urology,2003,62(1) :35-39.
6Calder A D, Hiorns M P, Abhyankar A. Contrast-enhanced magnetic resonance angiography for the detection of crossing renal vessels in children with symptom-atic ureteropelvic junction obstruction: comparison with operative findings[J]. Pediatr Radiol, 2007,37(4) : 356-361.
7Alfredo B, Michele G, Fabio M. MR Urography of the Ureter[J]. AJR,2002,179: 1307.