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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Journal ArticleDOI
Optical properties of peritoneal biological tissues in the spectral range of 350-2500 nm
Alexey N. Bashkatov,Alexey N. Bashkatov,Elina A. Genina,Elina A. Genina,M. D. Kozintseva,V. I. Kochubei,S. Yu. Gorodkov,Valery V. Tuchin,Valery V. Tuchin,Valery V. Tuchin +9 more
TL;DR: In this article, the optical characteristics of biological tissues sampled from the anterior abdominal wall of laboratory rats are for the first time experimentally studied in a wide wavelength range (350-2500 nm).
Journal ArticleDOI
Tomography-based radiative transfer analysis of an open-cell foam made of semitransparent alumina ceramics
TL;DR: In this paper, a radiative transfer model was established in the limit of geometric optics for a porous structure obtained from real alumina ceramic foams by computed tomography technique, considering the reflection and refraction at solid void interface and the volumetric transmission, absorption and scattering process inside semitransparent ceramic solids.
Journal ArticleDOI
Toward the detection of intraplaque hemorrhage in carotid artery lesions using photoacoustic imaging
M.Ü. Arabul,Maarten Heres,Marcel C. M. Rutten,Marc R.H.M. van Sambeek,Frans N. van de Vosse,Richard G.P. Lopata +5 more
TL;DR: Ex vivo PAI and plane wave ultrasound imaging of endarterectomy samples ex vivo revealed the presence of intraplaque hemorrhages that were not visible in the PUS images, which may elucidate preclinical studies toward the in vivo, noninvasive, vulnerability assessment of the atherosclerotic carotid plaque.
Journal ArticleDOI
Skeletal muscle dispersion (400-1000 nm) and kinetics at optical clearing.
TL;DR: Experimental studies of skeletal muscle dispersion and optical clearing kinetics proved the existence of the refractive index (RI) matching mechanism of OC and demonstrated an increase of RI of tissue fluids and consequently proved the occurrence of the RI matching mechanism.
Journal ArticleDOI
Effects of dehydration on the optical properties of in vitro porcine liver.
Dan Zhu,Qingming Luo,Jian Cen +2 more
TL;DR: It is of crucial importance to determine the effects of dehydration on the optical properties of tissue so that optimization of therapy and device for laser applications in medicine can be made.
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.