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Related Experiment Video

Updated: Jul 13, 2026

Near-Infrared Spectroscopy During Reactive Hyperemia for the Assessment of Lower Limb Vascular Function
04:44

Near-Infrared Spectroscopy During Reactive Hyperemia for the Assessment of Lower Limb Vascular Function

Published on: March 22, 2024

Mobile detection system to evaluate reactive hyperemia using radionuclide plethysmography.

François Harel1, Quam Ngo, Vincent Finnerty

  • 1Department of Nuclear Medicine, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada. francois_harel@hotmail.com

Physiological Measurement
|August 1, 2007
PubMed
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A new mobile system accurately measures forearm blood flow changes during reactive hyperemia. This radionuclide plethysmography method offers a reliable, non-invasive alternative for assessing vascular function.

Area of Science:

  • Vascular Physiology
  • Medical Imaging Technology
  • Cardiovascular Diagnostics

Background:

  • Reactive hyperemia is crucial for assessing vascular endothelial function.
  • Traditional methods for measuring blood flow can be invasive or lack mobility.
  • Developing non-invasive, portable tools is essential for widespread clinical application.

Purpose of the Study:

  • To validate a novel mobile detection system for assessing reactive hyperemia.
  • To compare the efficacy of radionuclide plethysmography with strain gauge plethysmography.
  • To establish the reliability and correlation of the mobile system in measuring forearm blood flow dynamics.

Main Methods:

  • Simultaneous measurements were performed on 26 subjects using radionuclide plethysmography and strain gauge plethysmography.

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Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

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Last Updated: Jul 13, 2026

Near-Infrared Spectroscopy During Reactive Hyperemia for the Assessment of Lower Limb Vascular Function
04:44

Near-Infrared Spectroscopy During Reactive Hyperemia for the Assessment of Lower Limb Vascular Function

Published on: March 22, 2024

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
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Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

Published on: May 10, 2024

  • The novel mobile detection system was employed for radionuclide plethysmography.
  • Reproducibility and correlation analyses were conducted on the collected blood flow data.

    • Main Results:

    • Both strain gauge and radionuclide plethysmography methods demonstrated excellent reproducibility (ICC=0.96 and 0.89, respectively).
    • A strong positive correlation (r=0.87) was observed between the two methods during reactive hyperemia.
    • The mobile radionuclide system proved effective in capturing dynamic blood flow variations.

    Conclusions:

    • The validated mobile detection system provides a reliable, non-invasive method for evaluating reactive hyperemia.
    • Radionuclide plethysmography with this mobile system is a viable alternative to traditional techniques for assessing forearm blood flow.
    • This technology has the potential to enhance the clinical assessment of vascular health and disease.