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HoloLens-Based Vascular Localization System: Precision Evaluation Study With a Three-Dimensional Printed Model.

Taoran Jiang1, Dewang Yu2, Yuqi Wang2

  • 1Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Journal of Medical Internet Research
|April 18, 2020
PubMed
Summary
This summary is machine-generated.

Augmented reality with HoloLens precisely localizes perforators for surgery. This system, tested on a 3D model, showed minimal navigation errors, suggesting its potential for safer surgical procedures.

Keywords:
3D PrintingHoloLensaugmented realityperforator flapreconstructive surgeryvascular localization

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Area of Science:

  • Medical Technology
  • Surgical Navigation
  • Augmented Reality

Background:

  • Vascular localization is critical for successful perforator flap transfer.
  • Augmented reality (AR) systems, like the HoloLens headset, can integrate computed tomographic angiography data with the surgical field.
  • This AR integration allows surgeons to visualize subsurface vasculature, enhancing perforator identification.

Purpose of the Study:

  • To evaluate the precision of the HoloLens-based augmented reality system for vascular localization.
  • To determine the system's accuracy as a key performance indicator for surgical navigation.

Main Methods:

  • A HoloLens AR system was used to localize vessels on a 3D printed model in a simulated operating room.
  • Navigation error was calculated by measuring the distance between corresponding points on virtual and physical vascular maps.
  • Testing occurred under various conditions, including different visual angles, light intensities, and motion states.

Main Results:

  • The HoloLens system demonstrated a mean navigation error between 1.35 mm and 3.18 mm, falling within clinically acceptable limits.
  • No significant differences in error were observed across varying visual angles, light intensities, or static/motion states.
  • A notable finding was that the system performed with greater accuracy in the absence of light.

Conclusions:

  • The HoloLens-based system exhibits high precision for perforator localization, supporting its use in surgical navigation.
  • The system has the potential to improve the safety and convenience of perforator flap transfer procedures.
  • The study recommends utilizing the HoloLens surgical navigation system without light for optimal performance.