Jehl, M;
Aristovich, K;
Faulkner, M;
Holder, D;
(2016)
Are patient specific meshes required for EIT head imaging?
Physiological Measurement
, 37
(6)
pp. 879-892.
10.1088/0967-3334/37/6/879.
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Abstract
Head imaging with electrical impedance tomography (EIT) is usually done with time-differential measurements, to reduce time-invariant modelling errors. Previous research suggested that more accurate head models improved image quality, but no thorough analysis has been done on the required accuracy. We propose a novel pipeline for creation of precise head meshes from magnetic resonance imaging and computed tomography scans, which was applied to four different heads. Voltages were simulated on all four heads for perturbations of different magnitude, haemorrhage and ischaemia, in five different positions and for three levels of instrumentation noise. Statistical analysis showed that reconstructions on the correct mesh were on average 25% better than on the other meshes. However, the stroke detection rates were not improved. We conclude that a generic head mesh is sufficient for monitoring patients for secondary strokes following head trauma.
| Type: | Article |
|---|---|
| Title: | Are patient specific meshes required for EIT head imaging? |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/0967-3334/37/6/879 |
| Publisher version: | http://dx.doi.org/10.1088/0967-3334/37/6/879 |
| Language: | English |
| Additional information: | Copyright © 2016 Institute of Physics and Engineering in Medicine. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (CC BY 3.0) (https://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| Keywords: | electrical impedance tomography, image reconstruction, head meshes, patient specific model |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1497372 |
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