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An integrated augmented reality surgical navigation platform using multi-modality imaging for guidance.

Harley H L Chan1, Stephan K Haerle2, Michael J Daly1

  • 1TECHNA Institute, University Health Network, Toronto, ON, Canada.

Plos One
|April 30, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces an augmented reality (AR) surgical navigation system that enhances visualization of hidden anatomical structures. Pre-clinical tests show the system accurately overlays virtual images onto the surgical site, improving precision for image-guided procedures.

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Area of Science:

  • Medical Imaging
  • Surgical Navigation
  • Augmented Reality

Background:

  • Intra-operative visualization of concealed anatomical structures remains a challenge in surgery.
  • Augmented reality (AR) offers potential solutions by overlaying virtual information onto the real surgical field.

Purpose of the Study:

  • To quantitatively and qualitatively evaluate a prototype interactive AR surgical navigation system.
  • To assess the feasibility and accuracy of AR-guided procedures using multimodality imaging.

Main Methods:

  • Developed an integrated AR surgical navigation system with real-time tracking and a laser pico-projector.
  • Conducted four pre-clinical animal studies using xenograft mouse models.
  • Utilized CT, PET, SPECT, and MRI data for image augmentation and a phantom for accuracy assessment.

Main Results:

  • Successfully performed all image-guided procedures on animal models.
  • The system reliably projected virtual images of tumors and anatomical structures onto the surgical site.
  • Phantom studies demonstrated a system accuracy of 0.55 ± 0.33mm, with overall accuracy <1mm.

Conclusions:

  • The prototype AR surgical navigation system effectively improves visualization of critical underlying structures.
  • This proof-of-concept study confirms the clinical applicability and high precision of the developed AR system for image-guided surgery.