Spectrophotometer for measuring the metabolic condition of a subject
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United States of America Patent
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Jul 14, 1998
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Nov 2, 1988
priority date (Note) -
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Abstract
One preferred embodiment utilizes differential measurement of radiation that migrated in two migration paths between two source (100) detector (110) pairs placed on the head in a manner that each path is localized in a portion of one hemisphere. The present invention also provides in various embodiments of spectrophotometer systems for in vivo examination of a tissue of a human by measuring changes in electromagnetic radiation scattered and absorbed in a migration path in the tissue. Generally, the spectrophotometer systems comprise a light source for introducing the radiation into the tissue, a detector for detecting radiation that has migrated in the tissue, processing means for processing signals of the detected radiation to create processed data, and evaluation means for determining physiological or pathophysiological changes in the tissue of interest. The present invention also provides for determining the metabolic condition of an aerobically stressed portion of tissue such as the muscle tissue of an exercising person.
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