Cited by 20Optical Imaging and Spectroscopy TechniquesSpectroscopy Techniques in Biomedical and Chemical ResearchOptical Coherence Tomography Applications

Characterization of optical parameters with a human forearm at the region from 1.15 to 1.52 µm using diffuse reflectance measurements

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Nishimura, Goro, Kida, Ikuhiro, Tamura, Mamoru·2006·Physics in Medicine and Biology

Abstract

Time- and space-resolved diffuse reflectance measurements were used to identify the optical parameters, the reduced scattering and absorption coefficients, of bulk living tissue in the region from 1.15 to 1.52 microm. Although in this region the detector was limited in its temporal resolution, we applied a peak-time shift analysis successfully to determine these coefficients in a human forearm, and then determined the absorption spectrum by space-resolved diffuse reflectance measurements. The absorption spectrum of a water content of 52% determined by magnetic resonance imaging experiments is in good agreement with the absorption coefficient obtained by optical measurements. Moreover, magnetic resonance imaging measurements suggest that the deviation of the absorption coefficients from the water spectrum in the strong water absorption band is caused by the heterogeneity of water distribution in tissue: the low content of water in the skin. These findings indicate that this optical method is potentially applicable to the non-invasive measurement of water in tissue, especially in a region lower than about 1.3-1.35 microm, which may be useful in monitoring oedema and tissue swelling.

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Authors
Nishimura, G., Kida, I., & Tamura, M.
Affiliations
Hokkaido University (JP)
Venue
Physics in Medicine and Biology
Published
2006-05-24
Volume
51
Issue
11
Pages
2997-3011
ISSN
  • 0031-9155 (ISSN-L)
  • 1361-6560
OpenAlex
W2020238249
Cited by
20
References
35
Citations by year
2026: 1 · 2024: 3 · 2023: 1 · 2022: 1 · 2021: 2 · 2017: 1 · 2016: 3 · 2015: 3 · 2013: 1 · 2012: 1
FWCI
0.54
Type
journal article
Language
en
Open access
Locations
  • Physics in Medicine and Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Hamamatsu Photonics K.K.
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Optical Imaging and Spectroscopy Techniques
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
  • Physical Sciences › Engineering › Biomedical Engineering › Optical Coherence Tomography Applications
Keywords
diffuse reflectance, reduced scattering coefficient, absorption coefficient, forearm, near-infrared spectroscopy, absorption spectra, tissue water content, water absorption bands, tissue heterogeneity
MeSH terms
Edema, Forearm, Humans, Magnetic Resonance Imaging, Radiography, Refractometry, Scattering, Radiation, Spectrum Analysis, Tissue Distribution, Water, Soft Tissue Injuries, Optics and Photonics

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