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Related Experiment Video

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Multispectral Optoacoustic Tomography for Functional Imaging in Vascular Research
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The vascular occlusion test using multispectral imaging: a validation study : The VASOIMAGE study.

Arnoud A Bruins1,2, Diederik G P J Geboers3,4, Jacob R Bauer5

  • 1Departments of Anesthesiology, Amsterdam UMC, VU University, location VUmc, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands. a.bruins@amsterdamumc.nl.

Journal of Clinical Monitoring and Computing
|January 6, 2020
PubMed
Summary
This summary is machine-generated.

Multispectral imaging (MSI) shows potential for assessing microcirculatory perfusion during vascular occlusion tests in healthy volunteers. While correlations with near-infrared spectroscopy (NIRS) were moderate, MSI offers a non-invasive method for regional oxygenation monitoring.

Keywords:
DeoxyhemoglobinMultispectral imagingNear-infrared spectroscopyVascular occlusion test

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Area of Science:

  • Physiology
  • Medical Imaging
  • Microcirculation Research

Background:

  • Multispectral imaging (MSI) is an emerging non-invasive technique for measuring tissue oxygenation and microcirculatory perfusion.
  • Validation of MSI in healthy volunteers, particularly during dynamic physiological challenges like vascular occlusion, is limited.

Purpose of the Study:

  • To validate multispectral imaging (MSI) for detecting microcirculatory perfusion disturbances.
  • To assess the capability of MSI to measure oxygenation changes during a vascular occlusion test (VOT).

Main Methods:

  • Fifty-eight healthy volunteers underwent two consecutive vascular occlusion tests (VOTs).
  • Tissue oxygenation was measured simultaneously using multispectral imaging (MSI) and near-infrared spectroscopy (NIRS).
  • Correlation analysis was performed on desaturation rate, recovery rate, and hyperemic area under the curve (AUC) between MSI and NIRS.

Main Results:

  • MSI successfully identified key components of the VOT, including desaturation and recovery slopes, comparable to NIRS.
  • Moderate correlations (r ≈ 0.41-0.42) were observed between MSI and NIRS for the rate of desaturation during the VOT.
  • The correlation between MSI and NIRS was moderate to weak, potentially due to physiological differences and measurement techniques.

Conclusions:

  • Non-contact multispectral imaging (MSI) can effectively measure regional oxygenation and deoxygenation changes during a vascular occlusion test in healthy individuals.
  • While MSI shows promise, its correlation with NIRS suggests further investigation is needed to understand discrepancies in measurement.
  • MSI represents a viable, non-invasive tool for evaluating microcirculatory function, warranting further validation in diverse clinical settings.