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    Bruise chromophore concentrations over time

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    Duckworth_etal_BruiseChromophoreConcentrationsoverTime_SPIE2008.pdf (334.6Kb)
    Date
    2008
    Author
    Duckworth, Mark G.
    Caspall, Jayme J.
    Mappus IV, Rudolph L.
    Kong, Linghua
    Yi, Dingrong
    Sprigle, Stephen
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    Abstract
    During investigations of potential child and elder abuse, clinicians and forensic practitioners are often asked to offer opinions about the age of a bruise. A commonality between existing methods of bruise aging is analysis of bruise color or estimation of chromophore concentration. Relative chromophore concentration is an underlying factor that determines bruise color. We investigate a method of chromophore concentration estimation that can be employed in a handheld imaging spectrometer with a small number of wavelengths. The method, based on absorbance properties defined by Beer-Lambert's law, allows estimation of differential chromophore concentration between bruised and normal skin. Absorption coefficient data for each chromophore are required to make the estimation. Two different sources of this data are used in the analysis- generated using Independent Component Analysis and taken from published values. Differential concentration values over time, generated using both sources, show correlation to published models of bruise color change over time and total chromophore concentration over time.
    URI
    http://hdl.handle.net/1853/36796
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    • Center for Assistive Technology and Environmental Access (CATEA) Publications [83]

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