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

Area of Science:

• Veterinary Radiology
• Urology
• Medical Imaging

Background:

• Conventional imaging techniques for urethral assessment can be limited in detail.
• Virtual endoscopy (VE) offers a novel approach to visualize internal anatomy.

Purpose of the Study:

• To evaluate the clinical utility of 3D CT-based VE for assessing urethral lumen and anatomy in an animal model.
• To compare VE findings with conventional methods and postmortem analysis.

Main Methods:

• 18 male beagles underwent conventional retrograde urethrography, CT-assisted retrograde urethography, and voiding urethrocystography.
• CT data was processed using TeraRecon software for virtual urethral reconstruction.
• VE findings were correlated with conventional urethrography and postmortem examinations.

Main Results:

• CT-assisted VE successfully depicted urethral anatomy and pathologies in all animals.
• Identified conditions included patent urethra (12), stenosis (3), diverticulum with stricture (2), and fistula (1).
• VE findings demonstrated high correlation with conventional diagnostic methods.

Conclusions:

• CT-assisted VE is a practical method for evaluating urethral anatomy and pathologies in an animal model.
• VE accurately identifies anatomical landmarks and lesion locations relative to critical structures.
• Digital imaging via VE may provide superior detail and characterization of urethral pathologies compared to conventional urethrocystography.