title: [MR urography: technique and clinical application in patients with kidney transplantation].
abstract: OBJECTIVE
  To assess the value of magnetic resonance urography (MRU) for the noninvasive postoperative evaluation of renal transplants.
  
  
  METHODS
  28 cases of renal transplantation were examined with a modified, heavily T2-weighted fast apin-echo pulse sequence and fat-suppression pulse aid. Post-procedure processing was performed with a maximal-projection (MIP) algorithm.
  
  
  RESULTS
  28 patients were studied. MRU revealed abnormal finding in 9 patients: mild dilatation of the renal pelvis without any urodynamic relevant obstruction (2), moderate dilatation of the renal pelvis (3), acute rejection (3), and ATN (1). Ureteral stenosis was diagnosed in 1 patients and treated surgically.
  
  
  CONCLUSIONS
  MRU is an alternative to conventional urinary tract images techniques. It requires no radiation or iodinated contrast material. It is reliable and noninvasive in depicting the urinary tract. MRU can be used as a noninvasive technique for assessment of renal transplantation in cases suspicious of complication in the excretory system.
authors.affiliation: Department of Urology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.
authors.forename: J
authors.initials: J
authors.lastname: Zheng
authors.forename: Z
authors.initials: Z
authors.lastname: Min
authors.forename: W
authors.initials: W
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D016030:Kidney Transplantation; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis; D014570:Urologic Diseases / Q000175:diagnosis*