title: Diagnosis of male posterior urethral stricture: comparison of 64-MDCT urethrography vs. standard urethrography.
abstract: BACKGROUND
  There are no reports regarding voiding/retrograde urethrography with 64-row multidetector CT (64-MDCT).To compare the clinical relevance of conventional voiding/retrograde urethrography and 64-MDCT urethrography for the evaluation of male posterior urethral stricture.
  
  
  METHODS
  From January to October 2009, 21 men were referred to our institution for the management of posterior urethral stricture. The patients were evaluated with conventional voiding and retrograde urethrography and 64-MDCT urethrography. The patients were examined by open operative intervention which was required in all patients. The radiologic data were compared using the operative findings.
  
  
  RESULTS
  64 MDCT urethrography provided extra clinical data in ten patients. It was superior to conventional urethrography for judging the urethral stricture length in three patients, characterizing the site of urethra-rectal fistula in four patients, and accurately delineating the proximal urethra in six patients.
  
  
  CONCLUSIONS
  64-MDCT urethrography is a promising tool as an alternative to traditional radiographic methods for defining male urethral strictures. It has the advantage of examining patients only in one position, without distortion, and by generating three-dimensional images; it can accurately measure the stricture length, aid in the diagnosis of some associated pathological conditions, such as urethrorectal fistula, and does not expose the physician to radiation.
authors.affiliation: Department of Urology, Southwest Hospital, Third Military Medical University, Chongqin City, 400038, China.
authors.forename: Xiao-ming
authors.initials: XM
authors.lastname: Zhang
authors.forename: Wei-lie
authors.initials: WL
authors.lastname: Hu
authors.forename: Hui-xu
authors.initials: HX
authors.lastname: He
authors.forename: Jun
authors.initials: J
authors.lastname: Lv
authors.forename: Hai-bo
authors.initials: HB
authors.lastname: Nie
authors.forename: Hua-qiang
authors.initials: HQ
authors.lastname: Yao
authors.forename: Huai
authors.initials: H
authors.lastname: Yang
authors.forename: Bo
authors.initials: B
authors.lastname: Song
authors.forename: Guang-ming
authors.initials: GM
authors.lastname: Peng
authors.forename: Hai-ling
authors.initials: HL
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D011857:Radiographic Image Interpretation, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014525:Urethral Stricture / Q000000981:diagnostic imaging*; D014567:Urography / Q000379:methods