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Vision-Based Tracking of Surgical Motion During Live Open-Heart Surgery.

Maj Stenmark1, Edin Omerbašić1, Måns Magnusson1

  • 1Pediatric Cardiac Surgery, Children's Heart Center, Skåne University Hospital, Lund, Sweden.

The Journal of Surgical Research
|December 8, 2021
PubMed
Summary

A novel vision-based motion tracking system using 3D-printed dice was developed for live open-heart surgery. This system provides accurate surgical motion data with minimal inconvenience to surgeons, aiding performance assessment.

Keywords:
Marker-based trackingMotion trackingPose estimationSurgical performance evaluation

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Area of Science:

  • Biomedical Engineering
  • Surgical Technology
  • Medical Imaging

Background:

  • Current surgical performance assessment methods are limited.
  • Existing tracking technologies are unsuitable for live operating rooms.
  • Objective intra-operative assessment is needed for surgeon feedback and outcome prediction.

Purpose of the Study:

  • To develop and evaluate a novel motion tracking system for live open-heart surgery.
  • To assess the feasibility and accuracy of a vision-based system in a real surgical environment.

Main Methods:

  • A 3D-printed 'tracking die' with markers was attached to surgical forceps.
  • Video recordings of open-heart procedures were analyzed using custom software.
  • System accuracy was validated against robotic ground truth.

Main Results:

  • The 6g tracking die was sterilized and added minimal mass to instruments.
  • Surgeons reported minor balance shifts but could not detect weight changes in blind tests.
  • The system achieved 2-3 mm and 1.1-2.6 degree accuracy with low computational cost (30-50 ms/frame).

Conclusions:

  • The vision-based motion tracking system is applicable to live surgery.
  • It offers accurate motion data extraction with negligible surgeon inconvenience.
  • The system has low computational requirements and potential for performance feedback.