- Concept UI
- M0028692
- Scope Note
- A noninvasive technique that uses the differential absorption properties of hemoglobin and myoglobin to evaluate tissue oxygenation and indirectly can measure regional hemodynamics and blood flow. Near-infrared light (NIR) can propagate through tissues and at particular wavelengths is differentially absorbed by oxygenated vs. deoxygenated forms of hemoglobin and myoglobin. Illumination of intact tissue with NIR allows qualitative assessment of changes in the tissue concentration of these molecules. The analysis is also used to determine body composition.
- Terms
-
Spectroscopy, Near-Infrared
Preferred Term
Term UI
T057394
Date01/01/1999
LexicalTag
NON
ThesaurusID
NLM (1997)
-
Spectrometry, Near-Infrared
Term UI
T057393
Date03/22/1996
LexicalTag
NON
ThesaurusID
NLM (1997)
-
NIR Spectroscopy
Term UI
T057395
Date11/21/1995
LexicalTag
NON
ThesaurusID
NLM (1997)