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Related Experiment Video

Updated: May 15, 2025

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RGB-Image-Based Real-Time Hemodynamic Monitoring of Intraperitoneal Organs in Rats Using a Standard Laparoscopic

Rokeya Khatun1, Yurika Suzuki1, Koyuki Kashiwagi2

  • 1Graduate School of Bio-Applications & Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.

Journal of Biophotonics
|April 9, 2025
PubMed
Summary
This summary is machine-generated.

This study validates a laparoscopic tool for real-time monitoring of tissue oxygen saturation (StO2) and total hemoglobin (CHbT) in abdominal organs. The approach uses RGB imaging and a regression model for enhanced surgical insights.

Keywords:
RGB imagehemodynamicslaparoscopytissue oxygen saturationtotal hemoglobin concentration

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Area of Science:

  • Biomedical Optics
  • Surgical Technology
  • Medical Imaging

Background:

  • Monitoring intraperitoneal organ hemodynamics is crucial during laparoscopy.
  • Current methods may lack real-time spatial and temporal resolution.
  • Developing non-invasive techniques can improve surgical outcomes.

Purpose of the Study:

  • To validate a novel approach for monitoring tissue oxygen saturation (StO2) and total hemoglobin concentration (CHbT) in intraperitoneal organs.
  • To assess the feasibility of using a commercial laparoscopic system for hemodynamic monitoring.
  • To establish a method for real-time spatial mapping of organ hemodynamics.

Main Methods:

  • Utilized a multiple regression model based on Monte Carlo simulations of light transport.
  • Correlated RGB values from laparoscopic imaging with hemoglobin concentrations.
  • Validated the approach using optical phantoms and in vivo experiments in rats.

Main Results:

  • The method successfully detected changes in StO2 and CHbT under varying endoscopic working distances in phantoms.
  • In vivo experiments demonstrated quantitative monitoring of induced hemodynamic changes in rat intestines, liver, and cecum.
  • The approach provides real-time spatial maps of tissue hemodynamics.

Conclusions:

  • The validated approach enables real-time hemodynamic monitoring of intraperitoneal organs during laparoscopy.
  • This technique has potential as a valuable tool for surgeons, offering enhanced intraoperative information.
  • Further development could integrate this into standard laparoscopic procedures for improved patient care.