Journal ArticleDOI
A review of the optical properties of biological tissues
TLDR
The known optical properties (absorption, scattering, total attenuation, effective attenuation and/or anisotropy coefficients) of various biological tissues at a variety of wavelengths are reviewed in this article.Abstract:
The known optical properties (absorption, scattering, total attenuation, effective attenuation, and/or anisotropy coefficients) of various biological tissues at a variety of wavelengths are reviewed. The theoretical foundations for most experimental approaches are outlined. Relations between Kubelka-Munk parameters and transport coefficients are listed. The optical properties of aorta, liver, and muscle at 633 nm are discussed in detail. An extensive bibliography is provided. >read more
Citations
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Journal ArticleDOI
Optical Biopsy: A New Frontier in Endoscopic Detection and Diagnosis
Thomas D. Wang,Jacques Van Dam +1 more
TL;DR: The basic biophysics of light-tissue interactions is described, the strengths and weaknesses of each method are assessed, and clinical and preclinical evidence for each approach is examined.
Journal ArticleDOI
In vivo determination of optical properties of normal and tumor tissue with white light reflectance and an empirical light transport model during endoscopy
Paulo R. Bargo,Scott A. Prahl,Teresa Tarnowski Goodell,R. A. Sleven,G. Koval,G. Blair,Steven L. Jacques +6 more
TL;DR: A spatially resolved steady-state diffuse reflectance method where only two fibers (one source and one detector) spaced 2.5 mm apart are used for the determination of the optical properties, which is suited for endoscopic measurements.
PatentDOI
Artefact reduction in photoplethysmography
TL;DR: The physical origins of the photoplethysmographic signals are explored in relation to a nonlinear measure of the observed intensity fluctuations and the nonlinearity renormalizes the received pulsations with optical information in a manner that aids physical interpretation.
Patent
Method and apparatus for optical measurement of bilirubin in tissue
TL;DR: In this article, a method and apparatus for the determination of bilirubin concentration in tissue such as skin, particularly neonatal skin, was proposed, where light reflected from the skin under test is analyzed to determine bilirubain concentration, corrected for maturity-dependent optical properties of the skin.
Journal ArticleDOI
Morphological model of human colon tissue fluorescence
George Zonios,Robert M. Cothren,J. T. Arendt,Jun Wu,J. Van Dam,James M. Crawford,Ramasamy Manoharan,Michael S. Feld +7 more
TL;DR: A morphological model of colon tissue fluorescence is developed which connects the clinically observed spectra with their underlying microscopic origins and quantitated these spectral features in terms of the intrinsic fluorescence properties of tissue and its general histological characteristics.
References
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Journal ArticleDOI
The Optics of Human Skin
R. Rox Anderson,John A. Parrish +1 more
TL;DR: An integrated review of the transfer of optical radiation into human skin is presented, aimed at developing useful models for photomedicine.
Journal ArticleDOI
New contributions to the optics of intensely light-scattering materials.
TL;DR: In this paper, the Gurevic and Judd formulas were derived from the Kubelka-Munk differential equations, and they are exact under the same conditions as in this paper, that is, when the material is perfectly dull and when the light, is perfectly diffused or if it is parallel and hits the specimen under an angle of 60° from normal.
Journal ArticleDOI
Time resolved reflectance and transmittance for the non-invasive measurement of tissue optical properties.
TL;DR: A simple model is developed, based on the diffusion approximation to radiative transfer theory, which yields analytic expressions for the pulse shape in terms of the interaction coefficients of a homogeneous slab.
Journal ArticleDOI
The delta-Eddington approximation for radiative flux transfer
TL;DR: In this paper, the delta-Eddington approximation was used to calculate monochromatic radiative fluxes in an absorbing-scattering atmosphere, by combining a Dirac delta function and a two-term approximation, which overcomes the poor accuracy of the Eddington approximation for highly asymmetric phase functions.