Anisotropy of light propagation in biological tissue

We investigated the propagation of light in biological tissues that have aligned cylindrical microstructures (e.g., muscle, skin, bone, tooth). Because of pronounced anisotropic light scattering by cylindrical structures (e.g., myofibrils and collagen fibers) the spatially resolved reflectance exhib...

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Bibliographic Details
Published in:Optics letters 2004-11, Vol.29 (22), p.2617-2619
Main Authors: KIENLE, A, FORSTER, F. K, HIBST, R
Format: Article
Language:English
Subjects:
Algorithms
Animals
Anisotropy
Arteries - physiology
Computer Simulation
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Light
Models, Biological
Optics
Physics
Radiation Dosage
Radiometry - methods
Scattering, Radiation
Swine
Tomography, Optical Coherence - methods
Wave optics
Wave propagation in random media
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Summary:We investigated the propagation of light in biological tissues that have aligned cylindrical microstructures (e.g., muscle, skin, bone, tooth). Because of pronounced anisotropic light scattering by cylindrical structures (e.g., myofibrils and collagen fibers) the spatially resolved reflectance exhibits a directional dependence that is different close to and far from the incident source. We applied Monte Carlo simulations, using the phase function of an infinitely long cylinder, to explain quantitatively the experimental results. These observations have consequences for noninvasive determination of the optical properties of tissue as well as for the diagnosis of early tissue alterations.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.29.002617