Analytical, Diagnostic and Therapeutic Techniques, and Equipment

Near-Infrared Spectroscopy

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.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

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.

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Classification

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Synonyms

13 entry terms
  • NIR Spectroscopy
  • Spectrometry, Near-Infrared
  • Spectroscopy, Near-Infrared
  • NIR Spectroscopies
  • Near-Infrared Spectrometries
  • Near-Infrared Spectrometry
  • Near-Infrared Spectroscopies
  • Spectrometries, Near-Infrared
  • Spectrometry, Near Infrared
  • Spectroscopies, NIR
  • Spectroscopies, Near-Infrared
  • Spectroscopy, NIR
  • Spectroscopy, Near Infrared

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Aspects Covered

10 allowable subheadings

Indexed with the subheadings classification, economics, ethics, history, instrumentation, methods, standards, statistics & numerical data, trends, veterinary.

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Indexing Annotation

usually NIM

MeSH Record

History Note

97

MeSH Record

Previous Indexing

  • Spectrophotometry, Infrared (1991-1996)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Near-Infrared Spectroscopy. Medical Subject Headings (MeSH). 2026. Unique ID D019265. http://id.nlm.nih.gov/mesh/2026/D019265
  2. Near-Infrared Spectroscopy. In: Wikipedia. https://en.wikipedia.org/wiki/Near-infrared_spectroscopy
  3. Near-Infrared Spectroscopy. In: Wikidata. https://www.wikidata.org/wiki/Q30920485