Ultrasonic detection of bloodstream emboli

Quantitative assessment of decompression-induced emboli in the blood flow may provide important information relating to physiological changes associated with decompression. A CW transmitter-receiver unit and a chest-mounted transducer probe have been developed for non-invasive ultrasonic monitoring...

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Bibliographic Details
Published inOcean 73 - IEEE International Conference on Engineering in the Ocean Environment pp. 141 - 148
Main Authors Jacobson, J., Haugen, D., Hogman, M.
Format Conference Proceeding
LanguageEnglish
Published 1973
Subjects
Arteries
Attenuation measurement
Biomedical monitoring
Blood flow
Frequency
Probes
Pulse measurements
Signal analysis
Signal detection
Signal processing
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Summary:Quantitative assessment of decompression-induced emboli in the blood flow may provide important information relating to physiological changes associated with decompression. A CW transmitter-receiver unit and a chest-mounted transducer probe have been developed for non-invasive ultrasonic monitoring of pulmonary blood flow using Doppler shift techniques. Preliminary spectral analysis of signals obtained during simulated dives in a hyperbaric test facility indicates that the spectrum of abnormal emboli signals is significantly different from that of normal blood flow. A preliminary theory explaining the observed spectra is offered.
DOI:10.1109/OCEANS.1973.1161252