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Related Experiment Video

Updated: Apr 19, 2026

Technical Approach for Infrared Tracking for Soft Tissue Navigation with a Holographic Head-Mounted Display and Preclinical Validation
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Multi-view stereo and advanced navigation for transanal endoscopic microsurgery.

Christos Bergeles, Philip Pratt, Robert Merrifield

    Medical Image Computing and Computer-Assisted Intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
    |December 9, 2014
    PubMed
    Summary

    Transanal endoscopic microsurgery (TEM) offers a less invasive option for rectal cancer. This study introduces an advanced navigation system to improve submucosal anatomical visualization during TEM procedures.

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    Area of Science:

    • Surgical technology
    • Medical imaging
    • Gastroenterology

    Background:

    • Transanal endoscopic microsurgery (TEM) is increasingly used for rectal cancer local excision.
    • A key challenge in TEM is the limited visualization of submucosal anatomical structures.
    • Enhanced intraoperative guidance is needed to improve the safety and efficacy of TEM.

    Purpose of the Study:

    • To present an advanced navigation system for intraoperative guidance during Transanal endoscopic microsurgery (TEM).
    • To address the lack of submucosal anatomical information in TEM procedures.
    • To demonstrate the feasibility of the navigation system using in vivo data.

    Main Methods:

    • Development of a navigation system that estimates intraoperative 3D structure from multiple stereoscopic views.
    • Registration of the intraoperative 3D structure to a preoperative anatomical volume using subject-specific priors.
    • Tracking of endoscope motion and visualization of its field-of-view alongside preoperative data.

    Main Results:

    • The system stably estimates the intraoperative 3D anatomical structure.
    • Accurate registration between intraoperative and preoperative data was achieved.
    • The system successfully provided intraoperative navigation for TEM in vivo.

    Conclusions:

    • The proposed navigation system enhances visualization of submucosal structures during TEM.
    • This technology has the potential to improve the precision and outcomes of Transanal endoscopic microsurgery.
    • The system offers a valuable tool for surgeons performing minimally invasive rectal cancer surgery.