Accounting for electrode movement in MRI-informed functional EIT lung imaging

Michael Crabb, Herve Chauris (Editor), Adler Andy (Editor), Lionheart R B William (Editor)

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    It is known to the thoracic EIT community that inaccurately known boundary shape and electrode positions can potentially cause major artefacts in reconstructions. These problems are addressed in this work by using an MR (Magnetic Resonance) image to approximate the boundary shape, and a forward problem perturbation technique to calculate an electrode movement Jacobian. Using real thorax EIT data from the fEITER system, two reconstruction algorithms, one accounting for movement and the other not, are compared. The corrections demonstrate that better spatial resolution and contrast of the lungs is obtained when accounting for electrode movement, as well as a reduction in boundary artefacts.
    Original languageEnglish
    Title of host publication100 years of electrical imaging
    EditorsHerve Chauris, Adler Andy, Lionheart R B William
    Place of PublicationParis
    PublisherPresses des Mines
    Pages83-86
    Number of pages4
    Publication statusPublished - Jul 2012
    Event100 years of electrical imaging - Paris
    Duration: 9 Jul 201210 Jul 2012

    Conference

    Conference100 years of electrical imaging
    CityParis
    Period9/07/1210/07/12

    Keywords

    • electrical impedance tomography
    • electrode movement
    • boundary shape
    • respiratory monitoring

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