Imaging of hemodynamic effects in arthritic joints with dynamic optical tomography

Andreas H. Hielscher, Joseph M. Lasker, Chris J. Fong, Edward Dwyer

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Optical probing of hemodynamics is often employed in areas such as brain, muscular, and breast-cancer imaging. In these studies an external stimulus is applied and changes in relevant physiological parameters, e.g. oxy or deoxyhemoglobin concentrations, are determined. In this work we present the first application of this method for characterizing joint diseases, especially effects of rheumatoid arthritis (RA) in the proximal-interphalangeal (PIP) finger joints. Using a dual-wavelength tomographic imaging system together with previously implemented modelbased iterative image reconstruction schemes, we have performed dynamic imaging case studies on a limited number of healthy volunteers and patients diagnosed with RA. Inflating a sphygmomanometer cuff placed around the forearm we elicited a controlled vascular response. We observed pronounced differences between the hemodynamic effect occurring in healthy volunteers and patients affected by RA.

    Original languageEnglish (US)
    Title of host publicationEuropean Conference on Biomedical Optics, ECBO 2007
    PublisherOptical Society of America (OSA)
    ISBN (Print)9780819467713
    DOIs
    StatePublished - 2007
    EventEuropean Conference on Biomedical Optics, ECBO 2007 - Munich, Germany
    Duration: Jun 17 2007Jun 17 2007

    Publication series

    NameOptics InfoBase Conference Papers
    ISSN (Electronic)2162-2701

    Conference

    ConferenceEuropean Conference on Biomedical Optics, ECBO 2007
    CountryGermany
    CityMunich
    Period6/17/076/17/07

    Keywords

    • Hemodynamics
    • Imaging
    • Optical tomography
    • Rheumatoid arthritis
    • Vascular dynamics

    ASJC Scopus subject areas

    • Instrumentation
    • Atomic and Molecular Physics, and Optics

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