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Three-Dimensional Computerized Model Based on the Sonourethrogram: A Novel Technique to Evaluate Anterior Urethral

Lei Chen1, Chao Feng2, Xiang-Guo Lv3

  • 1Department of Ultrasound in Medicine, Shanghai Institute of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated 6th People's Hospital, Shanghai, People's Republic of China.

The Journal of Urology
|September 4, 2017
PubMed
Summary

Three-dimensional (3D) imaging of the urethra using sonourethrogram provides accurate assessments for anterior urethral strictures. This novel technique aids surgeons in making informed decisions for surgical planning and treatment.

Keywords:
diagnosisfibrosisultrasonographyurethraurethral stricture

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Area of Science:

  • Urology
  • Medical Imaging
  • 3D Reconstruction

Background:

  • Anterior urethral strictures pose diagnostic challenges.
  • Traditional retrograde urethrogram has limitations in detailed anatomical visualization.
  • Sonourethrogram offers an alternative imaging modality.

Purpose of the Study:

  • To evaluate the accuracy and efficacy of a 3D reconstructed digital urethral model derived from sonourethrogram.
  • To assess the utility of this technique for diagnosing anterior urethral disease.

Main Methods:

  • A study involving 50 patients with anterior urethral strictures and 10 healthy volunteers.
  • Sonourethrogram and retrograde urethrogram were performed on all participants.
  • 3D urethral models were reconstructed from sonourethrogram data for analysis.

Main Results:

  • The 3D model visualized the entire anterior urethra, corpus spongiosum, and urethral lumen.
  • It provided additional information on spongiofibrosis.
  • Stricture length and location in the 3D model showed no significant difference compared to RUG and surgical findings.
  • A limitation was the reconstruction of only short segments due to probe width.

Conclusions:

  • 3D computerized models based on sonourethrogram represent a novel and effective method for evaluating anterior urethral strictures.
  • This technique enhances surgical decision-making for anterior urethral diseases.