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A current injecting device for electrical impedance tomography

Blad, B. LU ; Lindstrom, K. ; Bertenstam, L. ; Persson, B. R.R. LU orcid and Holmer, N. G. LU (1994) In Physiological Measurement 15(2A).
Abstract

Electrical impedance tomography (EIT) has to be improved in order to become an accepted diagnostic technique in clinical use. The aim of this study is to improve the hardware of this technique and preferably upgrade the current injecting device. Instead of using a constant current generator the idea is to implement a voltage source and measure current accurately, in order to improve the resolution in the image. The performance of such a device is analysed, particularly concerning theoretical and practical limitations. The amplitude and phase accuracy, noise and settling time are measured and presented in diagrams. The results show that improvements are possible to achieve and that such a device will improve the stability of an EIT... (More)

Electrical impedance tomography (EIT) has to be improved in order to become an accepted diagnostic technique in clinical use. The aim of this study is to improve the hardware of this technique and preferably upgrade the current injecting device. Instead of using a constant current generator the idea is to implement a voltage source and measure current accurately, in order to improve the resolution in the image. The performance of such a device is analysed, particularly concerning theoretical and practical limitations. The amplitude and phase accuracy, noise and settling time are measured and presented in diagrams. The results show that improvements are possible to achieve and that such a device will improve the stability of an EIT system and the image quality.

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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
in
Physiological Measurement
volume
15
issue
2A
article number
010
publisher
IOP Publishing
external identifiers
  • scopus:0028284232
  • pmid:8087053
ISSN
0967-3334
DOI
10.1088/0967-3334/15/2A/010
language
English
LU publication?
yes
id
10eb7094-d124-427a-b288-abef3d578e8e
date added to LUP
2020-05-12 12:32:30
date last changed
2024-01-02 10:56:27
@article{10eb7094-d124-427a-b288-abef3d578e8e,
  abstract     = {{<p>Electrical impedance tomography (EIT) has to be improved in order to become an accepted diagnostic technique in clinical use. The aim of this study is to improve the hardware of this technique and preferably upgrade the current injecting device. Instead of using a constant current generator the idea is to implement a voltage source and measure current accurately, in order to improve the resolution in the image. The performance of such a device is analysed, particularly concerning theoretical and practical limitations. The amplitude and phase accuracy, noise and settling time are measured and presented in diagrams. The results show that improvements are possible to achieve and that such a device will improve the stability of an EIT system and the image quality.</p>}},
  author       = {{Blad, B. and Lindstrom, K. and Bertenstam, L. and Persson, B. R.R. and Holmer, N. G.}},
  issn         = {{0967-3334}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{2A}},
  publisher    = {{IOP Publishing}},
  series       = {{Physiological Measurement}},
  title        = {{A current injecting device for electrical impedance tomography}},
  url          = {{http://dx.doi.org/10.1088/0967-3334/15/2A/010}},
  doi          = {{10.1088/0967-3334/15/2A/010}},
  volume       = {{15}},
  year         = {{1994}},
}