Analysis and compensation for errors in electrical impedance tomography images and ventilation-related measures due to serial data collection
Article
Yerworth, R., Frerichs, I. and Bayford, R. 2017. Analysis and compensation for errors in electrical impedance tomography images and ventilation-related measures due to serial data collection. Journal of Clinical Monitoring and Computing. 31 (5), pp. 1093-1101. https://doi.org/10.1007/s10877-016-9920-y
Type | Article |
---|---|
Title | Analysis and compensation for errors in electrical impedance tomography images and ventilation-related measures due to serial data collection |
Authors | Yerworth, R., Frerichs, I. and Bayford, R. |
Abstract | Electrical impedance tomography (EIT) is increasingly being used as a bedside tool for monitoring regional lung ventilation. However, most clinical systems use serial data collection which, if uncorrected, results in image distortion, particularly at high breathing rates. The objective of this study was to determine the extent to which this affects derived parameters. Raw EIT data were acquired with the GOEMF II EIT device (CareFusion, Höchberg, Germany) at a scan rate of 13 images/s during both spontaneous breathing and mechanical ventilation. Boundary data for periods of undisturbed tidal breathing were corrected for serial data collection errors using a Fourier based algorithm. Images were reconstructed for both the corrected and original data using the GREIT algorithm, and parameters describing the filling characteristics of the right and left lung derived on a breath by breath basis. Values from the original and corrected data were compared using paired t tests. Of the 33 data sets, 23 showed significant differences in filling index for at least one region, 11 had significant differences in calculated tidal impedance change and 12 had significantly different filling fractions (p = 0.05). We conclude that serial collection errors should be corrected before image reconstruction to avoid clinically misleading results. |
Research Group | Biophysics and Bioengineering group |
Publisher | Springer |
Journal | Journal of Clinical Monitoring and Computing |
ISSN | 1387-1307 |
Electronic | 1573-2614 |
Publication dates | |
Online | 17 Aug 2016 |
31 Oct 2017 | |
Publication process dates | |
Deposited | 12 Aug 2016 |
Accepted | 09 Aug 2016 |
Output status | Published |
Publisher's version | License |
Publisher's version | |
Publisher's version | |
Copyright Statement | © The Author(s) 2016. This article is published with open access at Springerlink.com |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s10877-016-9920-y |
Language | English |
https://repository.mdx.ac.uk/item/868qx
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