Cited by 62Optical Imaging and Spectroscopy TechniquesDermatologic Treatments and ResearchPhotodynamic Therapy Research Studies

In Vivo Measurement of Optical Properties of Human Skin for 450–800 nm and 950–1600 nm Wavelengths

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Kono, Takahiro, Yamada, Jun·2019·International Journal of Thermophysics

Abstract

Laser or light-emitting diode therapy has been developed for medical care and skin rejuvenation. Some of these therapies are not only ineffective, but also unsafe. To address these issues, the optical properties of human skin that characterize radiation transfer to the skin have to be clearly understood. In this study, we use in-house instruments to measure the in vivo absorption and scattering coefficients for 198 Japanese participants in visible (450–800 nm) and near-infrared (950–1600 nm) region. The average values and standard deviations of the optical properties are recorded. The effects of age, gender, and body parts on these parameters are analyzed. For the scattering coefficient, the highest value is observed for the inner forearm and the lowest for the region between the thumb and forefinger; females exhibit higher values than males in the visible and some of near-infrared wavelengths; and the value decreases with the age for males in the visible region. In terms of the absorption coefficient, males exhibit higher values than females in the visible region and some of near-infrared wavelength; and the values increase with age in the visible region; the magnitude relations between the body parts differ with the wavelength.

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  1. M.N. Özışık, Radiative Transfer & Interactions With Conduction & Convection (Welbel & Peck, New York, 1985), pp. 249-254

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Authors
Kono, T., & Yamada, J.
Affiliations
Shibaura Institute of Technology (JP)
Corresponding author
Kono, Takahiro
Venue
International Journal of Thermophysics
Published
2019-04-26
Volume
40
Issue
5
ISSN
  • 0195-928X (ISSN-L)
  • 1572-9567
OpenAlex
W2942172684
Cited by
62
References
34
Citations by year
2026: 3 · 2025: 11 · 2024: 17 · 2023: 10 · 2022: 8 · 2021: 6 · 2020: 6 · 2019: 1
FWCI
3.49
Type
journal article
Language
en
Open access
Locations
International Journal of Thermophysics (publishedVersion, cc-by)
Funders
Japan Society for the Promotion of Science (18K13708)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Optical Imaging and Spectroscopy Techniques
  • Health Sciences › Medicine › Dermatology › Dermatologic Treatments and Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
Keywords
absorption coefficient, scattering coefficient, in vivo measurement, visible light, near-infrared, laser therapy, light-emitting diode therapy, skin rejuvenation, age effects, sex differences

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