Journal ArticleDOI
Determining the optical properties of turbid media by using the adding–doubling method
TLDR
A method is described for finding the optical properties of a slab of turbid material by using total reflection, unscattered transmission, and total transmission measurements and the intrinsic error in the method is < 3% when four quadrature points are used.Abstract:
A method is described for finding the optical properties (scattering, absorption, and scattering anisotropy) of a slab of turbid material by using total reflection, unscattered transmission, and total transmission measurements. This method is applicable to homogeneous turbid slabs with any optical thickness, albedo, or phase function. The slab may have a different index of refraction from its surroundings and may or may not be bounded by glass. The optical properties are obtained by iterating an adding–doubling solution of the radiative transport equation until the calculated values of the reflection and transmission match the measured ones. Exhaustive numerical tests show that the intrinsic error in the method is <3% when four quadrature points are used.read more
Citations
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Optical properties of human skin, subcutaneous and mucous tissues in the wavelength range from 400 to 2000 nm
TL;DR: In this article, the optical properties of human skin, subcutaneous adipose tissue and human mucosa were measured in the wavelength range 400-2000 nm using a commercially available spectrophotometer with an integrating sphere.
Journal ArticleDOI
Quantitative optical spectroscopy for tissue diagnosis
TL;DR: This review describes optical interactions pursued for biomedical applications (fluorescence, fluorescence lifetime, phosphorescence, and Raman from cells, cultures, and tissues) and provides a descriptive framework for light interaction based upon tissue absorption and scattering properties.
Journal ArticleDOI
Near-infrared optical properties of ex vivo human skin and subcutaneous tissues measured using the Monte Carlo inversion technique
TL;DR: The absorption and transport scattering coefficients of c Caucasian and negroid dermis, subdermal fat and muscle have been measured for all wavelengths between 620 and 1000 nm and the optical properties of caucasian dermis were found to be approximately twice those of the underlying fat layer.
Journal ArticleDOI
Optical properties of skin, subcutaneous, and muscle tissues: a review
TL;DR: An overview of published absorption and scattering properties of skin and subcutaneous tissues measured in wide wavelength range is presented and basic principles of measurements of the tissue optical properties and techniques used for processing of the measured data are outlined.
Journal ArticleDOI
Optical properties of human skin in the near infrared wavelength range of 1000 to 2200 nm.
TL;DR: From the measured optical properties, it was found that a 2% Intralipid solution provides a suitable skin tissue phantom and in vitro results show that values for mua) follow 70% of the absorption coefficient of water.
References
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Journal ArticleDOI
A mathematical model for ultraviolet optics in skin
TL;DR: A new approach to calculating the transmission and reflection of ultraviolet radiation from skin is described, based upon a numerical solution of the equation governing radiation transport in matter, which has been used to investigate the photoprotective function of the thickness and melanin content of stratum corneum.
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Reflection and Transmission of Light by Diffusing Suspensions
TL;DR: In this paper, the diffuse reflection and transmission of light by a plane-parallel suspension of randomly oriented particles, scattering independently, are treated using radiative-transfer theory and exact allowance is made for external and internal reflection at the plane surfaces of the matrix.
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Determination of absorption and scattering coefficients for nonhomogeneous media. 2: experiment
TL;DR: In order to investigate experimentally the applicability of a previously developed two-flux radiative transfer model that takes into account surface reflections and collimated incidence, pulverized and sintered scattering standards prepared from a glass of known absorption coefficient variation are measured.
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Optical properties of human arterial thrombus, vascular grafts, and sutures: implications for selective laser thrombus ablation
TL;DR: To determine the optimal wavelength for laser ablation of arterial and graft thrombus, an integrating sphere was used to obtain optical measurements from different depths of abdominal aortic aneurysm thrombi, vascular grafts, and vascular sutures.
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Diffuse Scattered Radiation Theories of Duntley and of Kubelka–Munk
TL;DR: In this paper, the authors describe new ways of determining the five coefficients that appear in Duntley's theory and discuss the characteristic features of light-scattering mats that follow this theory, emphasizing the points of difference with the two-constant theory.