Can computed tomography - Assisted virtual endoscopy be an innovative tool for detecting urethral tissue pathologies?

Hazem Orabi, Tamer Aboushwareb, Josh Tan, James J. Yoo, Anthony Atala

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Objective To test if virtual endoscopy (VE) enabled by 3-dimensional computed tomographic (CT) scanner with supporting software allows for practical clinical interrogation and evaluation of the urethral lumen and anatomy in an animal model. Methods Assessment of urethral anatomy and repair results was performed in 18 male beagles using conventional retrograde urethrography, CT-assisted retrograde urethography, and voiding urethrocystography. The image slices from these studies were processed using TeraRecon software to create a virtual representation of the urethra and compared with conventional urethrography and postmortem analysis of retrieved urethras for diagnostic assessment and correlation. Results CT-assisted VE showed the orientation, size, and gross morphology of urethral anatomy, including the lesions in all the 18 animals studied. The VE showed patent urethra in 12 dogs, stenosed urethra in 3 dogs, urethral diverticulum with stricture in 2 animals, and fistula in one. These findings correlated with those of conventional diagnostic methods. The findings of the voiding and retrograde virtual urethrocystoscopy studies were also comparable. Conclusion These results demonstrate that CT-assisted VE is able to identify the anatomic landmarks in an animal model. This allows for detection of the site of different pathologies and their relations to important structures such as urethral sphincters and the bladder neck. Digital imaging might be used to identify urethral pathologies with greater details and characterization of the lesions when compared with the conventional urethrocystography.

Original languageEnglish
Pages (from-to)930-936
Number of pages7
JournalUrology
Volume83
Issue number4
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

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Urethra
Endoscopy
Tomography
Pathology
Anatomy
Software
Animal Models
Dogs
Anatomic Landmarks
Diverticulum
Fistula
Pathologic Constriction
Urinary Bladder

ASJC Scopus subject areas

  • Urology

Cite this

Can computed tomography - Assisted virtual endoscopy be an innovative tool for detecting urethral tissue pathologies? / Orabi, Hazem; Aboushwareb, Tamer; Tan, Josh; Yoo, James J.; Atala, Anthony.

In: Urology, Vol. 83, No. 4, 01.01.2014, p. 930-936.

Research output: Contribution to journalArticle

Orabi, Hazem ; Aboushwareb, Tamer ; Tan, Josh ; Yoo, James J. ; Atala, Anthony. / Can computed tomography - Assisted virtual endoscopy be an innovative tool for detecting urethral tissue pathologies?. In: Urology. 2014 ; Vol. 83, No. 4. pp. 930-936.
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abstract = "Objective To test if virtual endoscopy (VE) enabled by 3-dimensional computed tomographic (CT) scanner with supporting software allows for practical clinical interrogation and evaluation of the urethral lumen and anatomy in an animal model. Methods Assessment of urethral anatomy and repair results was performed in 18 male beagles using conventional retrograde urethrography, CT-assisted retrograde urethography, and voiding urethrocystography. The image slices from these studies were processed using TeraRecon software to create a virtual representation of the urethra and compared with conventional urethrography and postmortem analysis of retrieved urethras for diagnostic assessment and correlation. Results CT-assisted VE showed the orientation, size, and gross morphology of urethral anatomy, including the lesions in all the 18 animals studied. The VE showed patent urethra in 12 dogs, stenosed urethra in 3 dogs, urethral diverticulum with stricture in 2 animals, and fistula in one. These findings correlated with those of conventional diagnostic methods. The findings of the voiding and retrograde virtual urethrocystoscopy studies were also comparable. Conclusion These results demonstrate that CT-assisted VE is able to identify the anatomic landmarks in an animal model. This allows for detection of the site of different pathologies and their relations to important structures such as urethral sphincters and the bladder neck. Digital imaging might be used to identify urethral pathologies with greater details and characterization of the lesions when compared with the conventional urethrocystography.",
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