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Cerebral Blood Flow-Based Resting State Functional Connectivity of the Human Brain using Optical Diffuse Correlation Spectroscopy

Cerebral Blood Flow-Based Resting State Functional Connectivity of the Human Brain using Optical Diffuse Correlation Spectroscopy

Published on: May 27, 2020

Portable optical tissue flow oximeter based on diffuse correlation spectroscopy.

Yu Shang¹, Youquan Zhao, Ran Cheng

¹Center for Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, USA.

|November 21, 2009

Summary

This summary is machine-generated.

A new portable diffuse correlation spectroscopy (DCS) flow oximeter accurately measures tissue blood flow and oxygenation. This cost-effective device shows promise for clinical bedside monitoring.

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Area of Science:

Biomedical Engineering
Medical Physics
Physiology

Background:

Accurate monitoring of tissue blood flow and oxygenation is crucial for clinical diagnosis and treatment.
Existing methods may be limited by cost, portability, or ease of use.
Diffuse Correlation Spectroscopy (DCS) offers a non-invasive approach to assess blood flow dynamics.

Purpose of the Study:

To extend a portable diffuse correlation spectroscopy (DCS) flowmeter to simultaneously measure tissue blood flow and oxygenation, creating a DCS flow oximeter.
To validate the performance of the novel DCS flow oximeter against a commercial tissue oximeter.
To assess the potential of the DCS flow oximeter for clinical bedside monitoring.

Main Methods:

Development and adaptation of a portable diffuse correlation spectroscopy (DCS) device.
Concurrent measurement of calf muscle blood oxygenation using the DCS flow oximeter and a commercial tissue oximeter during controlled cuff inflation and deflation.
Statistical analysis of the correlation between the two measurement techniques.

Main Results:

The DCS flow oximeter successfully measured both tissue blood flow and oxygenation.
Oxygenation traces obtained from the DCS flow oximeter and the commercial tissue oximeter showed highly similar dynamic responses.
Data from the two methods were strongly correlated (mean r > 0.9, P < 10^-5, n=10).

Conclusions:

The portable, inexpensive, and user-friendly DCS flow oximeter is a validated tool for assessing tissue oxygenation.
This technology holds significant potential for non-invasive, real-time bedside monitoring of tissue blood flow and oxygenation in clinical settings.
The DCS flow oximeter offers a promising alternative for improving patient monitoring and diagnostic capabilities.