Metabolism monitoring of body organs
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United States of America Patent
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May 18, 2004
Grant Date -
N/A
app pub date -
Apr 11, 2000
filing date -
Apr 12, 1999
priority date (Note) -
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Abstract
Method and apparatus for determining the oxygenation level of hemoglobin in a probed region of the human body. A probed region of the body is irradiated with diffuse light, the frequency of which is shifted with ultrasound focused at the probed region. The relation between the two states of the oxygenation of the hemoglobin is determined by the light absorption at the focal region of the ultrasound. The blood volume may be monitored by irradiating the probed region with light at the isosbestic point.
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