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Quantification of optical properties of a breast tumor using random walk theory

Item Type:Article
Title:Quantification of optical properties of a breast tumor using random walk theory
Creators Name:Chernomordik, V. and Hattery, D.W. and Grosenick, D. and Wabnitz, H. and Rinneberg, H. and Moesta, K.T. and Schlag, P.M. and Gandjbakhche, A.
Abstract:For the first time we use a random walk methodology based on time-dependent contrast functions to quantify the optical properties of breast tumors (invasive ductal carcinoma) of two patients. Previously this theoretical approach was successfully applied for analysis of embedded objects in several phantoms. Data analysis was performed on distributions of times of flight for photons transmitted through the breast which were recorded in vivo using a time-domain scanning mammograph at 670 and 785 nm. The size of the tumors, their optical properties, and those of the surrounding tissue were reconstructed at both wavelengths. The tumors showed increased absorption and scattering. From the absorption coefficients at both wavelengths blood oxygen saturation was estimated for the tumors and the surrounding tissue.
Keywords:Photon Migration, Time-resolved Imaging, Light Propagation in Tissue, Differential Absorption, Optical Mammography
Source:Journal of Biomedical Optics
Publisher:Spie-Soc Photo-Optial Instrumentation Engineers (U.S.A.)
Page Range:80-87
Date:1 January 2002
Official Publication:https://doi.org/10.1117/1.1427049
PubMed:View item in PubMed

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