Using Speckle Contrast Optical Spectroscopy to Measure Blood Flow and Volume During Breath Holding (IMAGE)

California Institute of Technology

Using Speckle Contrast Optical Spectroscopy to Measure Blood Flow and Volume During Breath Holding

Caption

In the new study, researchers from Caltech and the Keck School of Medicine of USC tested the new device on 50 volunteers who were split between high- and low-stroke risk. After one minute, the participants were asked to hold their breath, causing blood to rush to the brain. The headset device used speckle contrast optical spectroscopy (SCOS) to measure changes in blood flow and volume. Based on those measurements, the device was able to successful differentiate between low- and high-risk participants.

Credit

Huang et al., Biomedical Optics Express, Sept. 2024.

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