Abstract
THE magnitude of the change in frequency of sound back-scattered in moving blood is a measure of the velocity of the blood1,2. We have used this principle to design a system for telemetry of blood flow information from the major vessels of healthy, active, totally unrestrained animals.
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References
Franklin, D. L., Schlegel, W. L., and Rushmer, R. F., Science, 134, 564 (1961).
Franklin, D. L., Schlegel, W. L., and Watson, N. W., in Biomedical Sciences Instrumentation, 1, 309 (Plenum Press, New York, 1963).
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FRANKLIN, D., WATSON, N. & VAN CITTERS, R. Blood Velocity telemetered from Untethered Animals. Nature 203, 528–530 (1964). https://doi.org/10.1038/203528a0
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DOI: https://doi.org/10.1038/203528a0
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