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Title: In vitro localization of intracranial haematoma using electrical impedance tomography semi-array
Authors: Ayati, S. Bentolhoda
Bouazza-Marouf, Kaddour
Kerr, David
Keywords: Electrical impedence tomography
Intracranial haematoma
Size estimation
Issue Date: 2015
Publisher: Elsevier / © Institute of Physics and Engineering in Medicine (IPEM)
Citation: AYATI, S.B., BOUAZZA-MAROUF, K. and KERR, D., 2015. In vitro localization of intracranial haematoma using electrical impedance tomography semi-array. Medical Engineering and Physics, 37 (1), pp. 34-41.
Abstract: Electrical Impedance Tomography is a non-invasive and portable method that has good potential as an ‎alternative to the conventional modalities for early detection of intracranial haematomas in high risk patients. ‎Early diagnosis can reduce treatment delays and most significantly can impact patient outcomes. Two eight-‎electrode layouts, a standard ring full array (FA) and a semi-array (SA), were investigated for their ability to ‎detect, localise and quantify simulated intracranial haematomas in vitro on ovine models for the purpose of ‎early diagnosis. SA layout speeds up electrode application and avoids the need to move and lift the patient's ‎head. Haematomas were simulated using gel samples with the same conductivity as blood. Both layouts, FA ‎and SA, could detect the presence of haematomas at any location within the skull. The mean of the relative ‎radial position error with respect to the brain radius was 7% for FA and 6% for SA, for haematomas close to the ‎electrodes, and 11% for SA for haematomas far from the electrodes at the back of the head. Size estimation ‎was not as good; the worst size estimation error for FA being around 30% while the best for SA was 50% for ‎simulated haematomas close to the electrodes.‎
Description: NOTICE: this is the author’s version of a work that was accepted for publication in Medical Engineering and Physics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Medical Engineering and Physics, vol 37, part 1, 2015, DOI:10.1016/j.medengphy.2014.10.001
Version: Accepted for publication
DOI: 10.1016/j.medengphy.2014.10.001
URI: https://dspace.lboro.ac.uk/2134/16582
Publisher Link: http://dx.doi.org/10.1016/j.medengphy.2014.10.001
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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