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Related Experiment Videos

Intrabody three-dimensional position sensor for an ultrasound endoscope.

Shinichi Tamura1, Masatsugu Hirano, Xin Chen

  • 1Division of Interdisciplinary Image Analysis, Osaka University Medical School, Suita City, Japan. tamuras@image.med.osaka-u.ac.jp

IEEE Transactions on Bio-Medical Engineering
|October 11, 2002
PubMed
Summary

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This study introduces an ultrasound endoscope navigation system to reduce X-ray exposure during procedures. It visualizes the endoscope

Area of Science:

  • Medical Imaging
  • Surgical Navigation
  • Biomedical Engineering

Background:

  • Conventional two-dimensional (2-D) X-ray fluoroscopy poses risks of radiation exposure.
  • Minimally invasive endoscopic procedures require precise instrument tracking for safety and efficacy.

Purpose of the Study:

  • To develop an intrabody navigation system as an alternative to X-ray fluoroscopy.
  • To directly measure and visualize the three-dimensional (3-D) position and trajectory of an ultrasound endoscope.

Main Methods:

  • Utilizing an ultrasound endoscope with integrated marker transducers on the body surface.
  • Synchronizing ultrasound pulses from external markers with endoscope scanning.
  • Employing an optical localizer for six-degrees-of-freedom tracking of external markers.

Related Experiment Videos

  • Leveraging the ultrasound endoscope's image reconstruction for 3-D localization.

    • Main Results:

    • The system successfully identifies the 3-D location and direction of the endoscope probe.
    • It visualizes external markers within the endoscope's scanned images, enabling position measurement.
    • The method integrates with existing commercial ultrasound imaging systems.

    Conclusions:

    • The developed system offers a novel approach to intrabody 3-D localization, reducing reliance on X-ray fluoroscopy.
    • It provides a 'global positioning system' for endoscopic navigation.
    • The technology is compatible with current ultrasound scanners, facilitating clinical adoption.