Scattering phase function spectrum makes reflectance spectrum measured from Intralipid phantoms and tissue sensitive to the device detection geometry

Chad Kanick, V Krishnaswamy, Ute Gamm, Dick Sterenborg, Dominic Robinson, Arjen Amelink, BW Pogue

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Reflectance spectra measured in Intralipid (IL) close to the source are sensitive to wavelength-dependent changes in reduced scattering coefficient (mu'(s)) and scattering phase function (PF). Experiments and simulations were performed using device designs with either single or separate optical fibers for delivery and collection of light in varying concentrations of IL. Spectral reflectance is not consistently linear with varying IL concentration, with PF-dependent effects observed for single fiber devices with diameters smaller than ten transport lengths and for separate source-detector devices that collected light at less than half of a transport length from the source. Similar effects are thought to be seen in tissue, limiting the ability to quantitatively compare spectra from different devices without compensation. (c) 2012 Optical Society of America
Original languageUndefined/Unknown
Pages (from-to)1086-1100
Number of pages15
JournalBiomedical Optics Express
Issue number5
Publication statusPublished - 2012

Research programs

  • EMC MM-03-32-09

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