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International Urology and Nephrology

, Volume 51, Issue 7, pp 1137–1143 | Cite as

MR urethrography versus X-ray urethrography compared with operative findings for the evaluation of urethral strictures

  • Weijing Tao
  • Genji BaiEmail author
  • Guangbo Fu
  • Xiaobing Niu
  • Hengbing Wang
  • Gongcheng Wang
Urology - Original Paper

Abstract

Purpose

We compared the accuracy of magnetic resonance (MR) urethrography and X-ray urethrography with operative findings for urethral strictures and observed their effects on treatment.

Materials and methods

A total of 87 male patients (10–85 years of age) treated from January 2015 to December 2016 were included in the study. X-ray and MR urethrograms were performed for all patients to determine the location, length, and degree of urethral strictures and the organizational structure around the urethra, and the results were compared with the operative findings. One-way analysis of variance (ANOVA) was performed to compare the lengths of the urethral strictures determined by the two methods with the operative findings. A value of P < 0.05, calculated using GraphPad software, indicated statistical significance.

Results

Urethral stricture was more clearly shown on MR urethrography than on X-ray urethrography. The stricture length measured by conventional X-ray urethrography [(2.17 ± 0.65) cm] was much longer than that measured by MR urethrography [(1.68 ± 0.67) cm]. The surgical findings [(1.66 ± 0.70) cm] were significantly different from X-ray urethrography findings (F = 24.660, P = 0.000), but no significant difference was observed between the surgical findings and the stricture length measured by MR urethrography (F = 0.040, P = 0.842).

Conclusion

Urethral strictures can be displayed more clearly and accurately by MR urethrography than by X-ray urethrography. MR urethrography is expected to become a necessary and standard procedure for the preoperative examination of urethral strictures.

Keywords

Urethral stricture Magnetic resonance imaging X-ray urethrography 

Notes

Acknowledgements

All authors thank Ms. Hui Ji, an MRI technician in the Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical University.

Compliance with ethical standards

Conflict of interest

The authors declare no competing financial interests.

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Weijing Tao
    • 1
  • Genji Bai
    • 1
    Email author
  • Guangbo Fu
    • 2
  • Xiaobing Niu
    • 2
  • Hengbing Wang
    • 2
  • Gongcheng Wang
    • 2
  1. 1.Department of RadiologyThe Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical UniversityHuai’anPeople’s Republic of China
  2. 2.Department of Urology SurgeryThe Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical UniversityHuai’anPeople’s Republic of China

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