• Critical care medicine · Feb 2009

    Review

    Principles of electrical impedance tomography and its clinical application.

    • Marc Bodenstein, Matthias David, and Klaus Markstaller.
    • Department of Anesthesiology, Johannes Gutenberg-University Mainz, Mainz, Germany. marc-bodenstein@gmx.de
    • Crit. Care Med. 2009 Feb 1; 37 (2): 713-24.

    ObjectiveThis review outlines the basic principle, in addition to validated and upcoming clinical use of electrical impedance tomography (EIT). EIT generates functional tomograms of the thorax for detection of changes in regional lung aeration. These images allow an intraindividual comparison of changes in regional lung function. Specifically, EIT aims to optimize ventilation therapy in patients with acute lung failure.Data SourcesPubMed: National Library of Medicine and the National Institutes of Health.Study SelectionStudies with the key words "electrical impedance tomography" since 1983.Data ExtractionQualitative and quantitative results of the studies.Data SynthesisWe summarize basic principles of the technique and subsequent analyzing methods, and give an overview of clinical and scientific questions that can be addressed by EIT.ConclusionPotential applications in the future as well as limitations of EIT technology are described. In summary, EIT is a promising functional tomography technology on the verge of its clinical application.

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