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Journal of Biomedical Optics

Quantifying phase function influence in subdiffusively backscattered light
Author(s): Nico Bodenschatz; Philipp Krauter; André Liemert; Alwin Kienle
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Paper Abstract

Light backscattering at short source–detector separations is considerably influenced by the scattering phase function of a turbid medium. We seek to more precisely relate a medium’s subdiffusive backscattering to the angular scattering characteristics of its microstructure. First, we demonstrate the inability of the scattering asymmetry g1=<cosθ< to predict phase function influence on backscattering and reveal ambiguities related to the established phase function parameter γ. Through the use of high-order similarity relations, we introduce a new parameter that more accurately relates a scattering phase function to its subdiffusive backscattering intensity. Using extensive analytical forward calculations based on solutions to the radiative transfer equation in the spatial domain and spatial frequency domain, we demonstrate the superiority of our empirically derived quantifier σ over the established parameter γ.

Paper Details

Date Published: 11 March 2016
PDF: 11 pages
J. Biomed. Opt. 21(3) 035002 doi: 10.1117/1.JBO.21.3.035002
Published in: Journal of Biomedical Optics Volume 21, Issue 3
Show Author Affiliations
Nico Bodenschatz, Institut für Lasertechnologien in der Medizin und Messtechnik (Germany)
Philipp Krauter, Institut für Lasertechnologien in der Medizin und Messtechnik (Germany)
André Liemert, Institut für Lasertechnologien in der Medizin und Meßtechnik (Germany)
Alwin Kienle, Institut für Lasertechnologien in der Medizin und Messtechnik (Germany)

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