Abstract
THE ultrasonic Doppler flowmeter1 has been used to measure blood flow in several animal species2,3 and man4,5 by monitoring the frequency shift produced in the scattering of ultrasonic waves by moving blood cells. The extreme sensitivity of this instrument to air bubbles in the circulating fluid is a familiar nuisance encountered during in vitro testing and calibration procedures. We have exploited this characteristic for the in vivo detection of circulating gas emboli in an animal decompressed rapidly from a hyperbaric environment.
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References
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GILLIS, M., PETERSON, P. & KARAGIANES, M. In vivo Detection of Circulating Gas Emboli associated with Decompression Sickness using the Doppler Flowmeter. Nature 217, 965–967 (1968). https://doi.org/10.1038/217965a0
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DOI: https://doi.org/10.1038/217965a0
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