Bouazza_Manuscript, In vitro localization of intracranial haematoma using EIT semi-_array.pdf (806.01 kB)
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In vitro localization of intracranial haematoma using electrical impedance tomography semi-array

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journal contribution
posted on 08.01.2015, 16:20 by Hoda Ayati, Kaddour Bouazza-MaroufKaddour Bouazza-Marouf, David KerrDavid Kerr
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.‎

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Medical Engineering and Physics ‎

Volume

37

Issue

1

Pages

30 - 37 (8)

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.

Publisher

Elsevier / © Institute of Physics and Engineering in Medicine (IPEM)

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

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

Language

en