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Optical phantoms with adjustable subdiffusive scattering parameters.

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Title: Optical phantoms with adjustable subdiffusive scattering parameters.
Authors: Krauter, Philipp1 philipp.krauter@ilm-ulm.de, Nothelfer, Steffen1, Bodenschatz, Nico1, Simon, Emanuel1, Stocker, Sabrina1, Foschum, Florian Foschum1, Kienle, Alwin1
Source: Journal of Biomedical Optics. Oct2015, Vol. 20 Issue 10, p105008-1-105008-10. 10p.
Subjects: Imaging phantoms, Scattering potentials, Intrinsic factor (Physiology), Fluorescence, Refractive index
Abstract: A new epoxy-resin-based optical phantom system with adjustable subdiffusive scattering parameters is presented along with measurements of the intrinsic absorption, scattering, fluorescence, and refractive index of the matrix material. Both an aluminium oxide powder and a titanium dioxide dispersion were used as scattering agents and we present measurements of their scattering and reduced scattering coefficients. A method is theoretically described for a mixture of both scattering agents to obtain continuously adjustable anisotropy values g between 0.65 and 0.9 and values of the phase function parameter γ in the range of 1.4 to 2.2. Furthermore, we show absorption spectra for a set of pigments that can be added to achieve particular absorption characteristics. By additional analysis of the aging, a fully characterized phantom system is obtained with the novelty of g and γ parameter adjustment. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:A new epoxy-resin-based optical phantom system with adjustable subdiffusive scattering parameters is presented along with measurements of the intrinsic absorption, scattering, fluorescence, and refractive index of the matrix material. Both an aluminium oxide powder and a titanium dioxide dispersion were used as scattering agents and we present measurements of their scattering and reduced scattering coefficients. A method is theoretically described for a mixture of both scattering agents to obtain continuously adjustable anisotropy values g between 0.65 and 0.9 and values of the phase function parameter γ in the range of 1.4 to 2.2. Furthermore, we show absorption spectra for a set of pigments that can be added to achieve particular absorption characteristics. By additional analysis of the aging, a fully characterized phantom system is obtained with the novelty of g and γ parameter adjustment. [ABSTRACT FROM AUTHOR]
ISSN:10833668
DOI:10.1117/1.JBO.20.10.105008