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Image overlay solution based on threshold detection for a compact near infrared fluorescence goggle system.

Shengkui Gao1, Suman B Mondal2, Nan Zhu3

  • 1Washington University in St. Louis, Computer Science and Engineering Department, St. Louis, Missouri 63130, United States.

Journal of Biomedical Optics
|January 22, 2015
PubMed
Summary

A new compact near-infrared (NIR) fluorescence imaging system (NFIS) offers hands-free, real-time intraoperative guidance. This lightweight system provides precise image overlay, enhancing surgical accuracy and reliability for clinical applications.

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Optical Imaging

Background:

  • Near-infrared (NIR) fluorescence imaging is valuable for clinical procedures like intraoperative guidance.
  • Existing NIR systems are often bulky or handheld, restricting their intraoperative utility.

Purpose of the Study:

  • To develop a compact, lightweight, and hands-free NIR fluorescence imaging system (NFIS) for intraoperative guidance.
  • To integrate NFIS with a goggle display system for real-time image overlay.

Main Methods:

  • Development of a compact NIR fluorescence imaging system (NFIS).
  • Implementation of an image overlay solution based on threshold detection.
  • Integration with a goggle display system and a miniature LED tracking pod.
  • In vivo experimental evaluation using indocyanine green in mice.

Main Results:

  • The NFIS achieved a low detection limit of 25 nM indocyanine green at 27 frames per second.
  • Demonstrated highly precise overlay of NIR and visible images with an error within 2 mm at a 65 cm working distance.
  • The system is compact, lightweight, and enables hands-free operation.

Conclusions:

  • The proposed compact NFIS offers a reliable solution for intraoperative guidance.
  • Its high precision and ease of integration make it suitable for clinical studies and surgical use.
  • The system enhances the potential of NIR fluorescence imaging in surgical settings.