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Impedance imaging using linear electrode arrays.

H M Powell, D C Barber, I L Freeston

    Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Fur Medizinische Physik and the European Federation of Organisations for Medical Physics
    |January 1, 1987
    PubMed
    Summary
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    Linear electrode arrays offer advantages like precise positioning and mobility for impedance imaging. Despite challenges in data selection and measurement range, preliminary results suggest potential clinical applications.

    Area of Science:

    • Biomedical Engineering
    • Medical Imaging Technology

    Background:

    • Electrical impedance tomography (EIT) is a developing imaging technique.
    • EIT systems commonly use arrays of electrodes placed around the body.
    • Linear electrode arrays present unique characteristics for EIT.

    Purpose of the Study:

    • To evaluate the characteristics of linear electrode arrays for impedance imaging.
    • To identify the advantages and disadvantages of using linear arrays.
    • To assess the feasibility of clinical applications for this technology.

    Main Methods:

    • Examination of electrode positioning, resolution, and sensitivity.
    • Analysis of data set selection and measurement range challenges.
    • Inclusion of preliminary in vivo measurements.

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    Main Results:

    • Linear arrays offer advantages such as known electrode position, localized resolution, and mobility.
    • Challenges related to data set choice and measurement range were investigated.
    • Preliminary in vivo data demonstrated the system's capabilities.

    Conclusions:

    • Linear electrode arrays show promise for impedance imaging.
    • Further investigation is warranted to explore their full clinical potential.