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Related Experiment Videos

New 3-dimensional mapping device for cystoscopy

T Hatano1, M Hayakawa, Y Koyama

  • 1Department of Urology, University of the Ryukyus, Okinawa, Japan.

The Journal of Urology
|September 1, 1997
PubMed
Summary
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This study introduces a novel device that enhances cystoscopy by adding 3D measurement capabilities. This innovation allows for precise anatomical measurements, improving diagnostic accuracy in urology.

Area of Science:

  • Urology
  • Medical Device Engineering
  • Diagnostic Imaging

Background:

  • Cystoscopy is a common urological procedure.
  • Current cystoscopy lacks quantitative measurement capabilities for anatomical structures.
  • This limitation hinders precise diagnosis and assessment.

Purpose of the Study:

  • To develop a novel device to add measurement capabilities to a standard cystoscope.
  • To overcome the limitations of subjective visual assessment in cystoscopy.

Main Methods:

  • A 5-arm articulated device with joint angle sensors was developed.
  • The device links to the cystoscope eyepiece, enabling free movement.
  • 3D coordinates of the cystoscope tip are calculated from joint angles.
  • Distance measurements are obtained by calculating coordinates.

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Main Results:

  • The device successfully calculated distances and angles between the bladder neck and ureteral orifices in clinical cases.
  • Continuous measurements demonstrated that these distances increase with bladder filling.
  • The system provides accurate 3D mapping of relevant anatomical landmarks.

Conclusions:

  • The developed computer-assisted 3D mapping device offers reliable numerical data, replacing subjective cystoscopic assessments.
  • This technology can facilitate the establishment of new diagnostic criteria in urology.
  • Enhanced precision in anatomical measurement improves diagnostic capabilities.