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Related Experiment Video

Updated: Mar 29, 2026

Pedicle Screw Placement Using an Augmented Reality Head-Mounted Display in a Porcine Model
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Display-based augmented reality navigation for CT-Guided thoracoabdominal punctures: phantom study of accuracy and

Jihong Chen1, Tiansheng Liu2,3, Xiaolong Wang4

  • 1Department of Radiation Oncology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, People's Republic of China.

Biomedical Physics & Engineering Express
|March 27, 2026
PubMed
Summary

This study shows augmented reality (AR) navigation improves needle accuracy in medical procedures. AR guidance offers better precision and efficiency compared to traditional CT scans, benefiting minimally invasive interventions.

Keywords:
CT-guided interventionDGPS markersaugmented realityneedle guidancethoracoabdominal procedures

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Area of Science:

  • Medical Imaging
  • Surgical Navigation
  • Augmented Reality in Medicine

Background:

  • Percutaneous thoracoabdominal interventions require precise needle placement.
  • Conventional CT-guided procedures face limitations like iterative scans, operator variability, and 2D visualization.

Purpose of the Study:

  • To evaluate a novel display-based augmented reality (AR) navigation system for enhanced needle guidance.
  • To assess AR system's accuracy, efficiency, and workflow improvements compared to conventional CT guidance.

Main Methods:

  • A preclinical study using a CIRS abdominal phantom.
  • Integration of virtual-to-real registration via deltille grid position sensing (DGPS) markers.
  • Comparison of AR guidance with conventional step-and-shoot CT guidance involving expert and novice operators.

Main Results:

  • AR guidance demonstrated high first-pass accuracy with minimal distance and angular errors, irrespective of operator experience.
  • No significant differences in accuracy were observed between expert and novice operators using AR.
  • AR guidance reduced targeting errors and the number of verification scans compared to conventional CT.

Conclusions:

  • Augmented reality navigation significantly enhances first-pass needle precision in percutaneous interventions.
  • The AR system reduces procedural variability and improves workflow efficiency.
  • AR navigation shows potential for more consistent and efficient minimally invasive procedures.