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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The role of photo-activated melanosomes and cellular antioxidant defenses in the response of RPE cells to laser radiation
Randolph D. Glickman,San Antonio +1 more
TL;DR: The hypotheses that the R PE pigments in general contribute to photooxidative stress in ocular tissue, and that accumulation of lipofuscin pigment specifically contributes to age-related oxidative stress in the RPE are supported.
Journal ArticleDOI
Universal Theory of Light Scattering of Randomly Oriented Particles: A Fluctuational-Electrodynamics Approach for Light Transport Modeling in Disordered Nanostructures
TL;DR: In this paper, a universal theory of averaged light scattering of randomly oriented objects is presented, where expansion-basis-independent formulas of the orientation-and-polarization-averaged absorption cross section, scattering cross section and asymmetry parameter are derived for single or a collection of objects of arbitrary shape.
Journal ArticleDOI
Method to determine the concentrations of constituents in a bidisperse turbid medium using Monte Carlo simulation for mixtures
Kalpak Gupta,M. R. Shenoy +1 more
TL;DR: In this paper, the authors use the Monte Carlo method to simulate the propagation of light in a turbid mixture, that comprises of different types of particles, and obtain the relevant probability distributions, which are found to be consistent with the works reported in the literature.
Dissertation
A study on the use of polarized light in application to noninvasive tissue diagnostics.
TL;DR: In this article, Mueller matrix and Stokes vector is used to detect skin cancer in a medical imaging system, and a theory of the Mueller matrix is presented. But the authors do not discuss its application in the medical field.
Proceedings ArticleDOI
Development and validation of a biologically realistic tissue-mimicking material for photoacoustics and other bimodal optical-acoustic modalities
TL;DR: In this article, the authors explored the use of various formulations of PVC plastisol (PVCP) based on varying mixtures of several liquid plasticizers to simulate different tissue compositions and offer greater mechanical strength than hydrogels.
References
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Journal ArticleDOI
A simplex method for function minimization
John A. Nelder,R. Mead +1 more
TL;DR: A method is described for the minimization of a function of n variables, which depends on the comparison of function values at the (n 41) vertices of a general simplex, followed by the replacement of the vertex with the highest value by another point.
Book
Introduction to Numerical Analysis
Josef Stoer,Roland Bulirsch +1 more
TL;DR: This well written book is enlarged by the following topics: B-splines and their computation, elimination methods for large sparse systems of linear equations, Lanczos algorithm for eigenvalue problems, implicit shift techniques for theLR and QR algorithm, implicit differential equations, differential algebraic systems, new methods for stiff differential equations and preconditioning techniques.
Journal ArticleDOI
A review of the optical properties of biological tissues
TL;DR: 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.
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.