Optoacoustic monitoring of blood oxygenation
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United States of America Patent
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Dec 24, 2002
Grant Date -
N/A
app pub date -
Aug 7, 2000
filing date -
Aug 6, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An optoacoustic apparatus is disclosed which includes a radiation source of pulsed radiation and a probe having a front face to be placed in close proximity to or in contact with a tissue site of an animal body. The probe further includes a plurality of optical fibers terminating at the surface of the front face of the probe and connected at their other end to a pulsed laser. The front face of the probe also has mounted therein or thereon a transducer for detecting an acoustic response from blood in the tissue site to the radiation pulses connected to a processing unit which converts the transducer signal into a measure of venous blood oxygenation.
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