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Development of Intraoperative Near-Infrared Fluorescence Imaging System Using a Dual-CMOS Single Camera.

Janghoon Choi1,2, Jun Geun Shin3, Hyuk-Sang Kwon2

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|July 28, 2022
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Summary
This summary is machine-generated.

Researchers created a novel single-camera near-infrared (NIR) fluorescence imaging system for surgery. This compact device uses two CMOS sensors, improving upon existing single-camera systems for enhanced surgical visualization.

Keywords:
dual-CMOS single cameraimage-guided surgerylymph node mappingnear-infrared fluorescence imaging system

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Surgical Technology

Background:

  • Conventional dual-camera systems for simultaneous color and near-infrared (NIR) fluorescence imaging increase device bulk.
  • Existing single-camera NIR systems using RGB_NIR filters suffer from reduced infrared image sensitivity and resolution.
  • Limitations in exposure time and gain control in prior single-camera systems hinder optimal image acquisition.

Purpose of the Study:

  • To develop a compact, single-camera NIR fluorescence imaging system for image-guided surgery.
  • To overcome the limitations of existing single-camera NIR imaging technologies.
  • To enhance sensitivity and signal-to-background ratio for improved surgical visualization.

Main Methods:

  • Development of a novel compact fluorescent imaging system utilizing a single camera with two complementary metal-oxide semiconductor (CMOS) image sensors.
  • Evaluation of system performance by measuring sensitivity and signal-to-background ratio.
  • Systematic analysis based on varying indocyanine green (ICG) concentrations, exposure times, and camera gain settings.

Main Results:

  • The developed system demonstrated improved sensitivity and signal-to-background ratio compared to previous single-camera approaches.
  • Performance metrics were optimized through controlled adjustments of ICG concentration, exposure time, and camera gain.
  • The system's effectiveness was validated through comprehensive toxicity analysis of the light source and in vivo testing.

Conclusions:

  • The novel single-camera, dual-CMOS sensor NIR fluorescence imaging system offers a compact and effective solution for image-guided surgery.
  • The system provides enhanced sensitivity and signal-to-background ratio, crucial for accurate intraoperative visualization.
  • Successful in vivo testing and toxicity analysis confirm the clinical applicability of this advanced surgical imaging technology.