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Quantitative assessment of impedance tomography for temperature measurements in hyperthermia

Blad, B. LU ; Persson, B. LU orcid and Lindström, K. LU (1992) In International Journal of Hyperthermia 8(1). p.33-43
Abstract

The objective of this study is a non-invasive assessment of the thermal dose in hyperthermia. Electrical impedance tomography (EIT) has previously been given a first trial as a temperature monitoring method together with microwave-induced hyperthermia treatment, but it has not been thoroughly investigated. In the present work we have examined this method in order to investigate the correlation in vitro between the true spatial temperature distribution and the corresponding measured relative resistivity changes. Different hyperthermia techniques, such as interstitial water tubings, microwave-induced, laser-induced and ferromagnetic seeds have been used. The results show that it is possible to find a correlation between the measured... (More)

The objective of this study is a non-invasive assessment of the thermal dose in hyperthermia. Electrical impedance tomography (EIT) has previously been given a first trial as a temperature monitoring method together with microwave-induced hyperthermia treatment, but it has not been thoroughly investigated. In the present work we have examined this method in order to investigate the correlation in vitro between the true spatial temperature distribution and the corresponding measured relative resistivity changes. Different hyperthermia techniques, such as interstitial water tubings, microwave-induced, laser-induced and ferromagnetic seeds have been used. The results show that it is possible to find a correlation between the measured temperature values and the tomographically measured relative resistivity changes in tissue-equivalent phantoms. But the uncertainty of the temperature coefficients, which has been observed, shows that the method has to be improved before it can be applied to clinical in vivo applications.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Electrical impedance tomography, Hyperthermia, Thermometry
in
International Journal of Hyperthermia
volume
8
issue
1
pages
11 pages
publisher
Taylor & Francis
external identifiers
  • pmid:1545162
  • scopus:0026511514
ISSN
0265-6736
DOI
10.3109/02656739209052877
language
English
LU publication?
yes
id
5febc7c8-864b-42ad-a6f8-75ef59149c6e
date added to LUP
2020-05-16 12:54:09
date last changed
2024-01-02 11:00:58
@article{5febc7c8-864b-42ad-a6f8-75ef59149c6e,
  abstract     = {{<p>The objective of this study is a non-invasive assessment of the thermal dose in hyperthermia. Electrical impedance tomography (EIT) has previously been given a first trial as a temperature monitoring method together with microwave-induced hyperthermia treatment, but it has not been thoroughly investigated. In the present work we have examined this method in order to investigate the correlation in vitro between the true spatial temperature distribution and the corresponding measured relative resistivity changes. Different hyperthermia techniques, such as interstitial water tubings, microwave-induced, laser-induced and ferromagnetic seeds have been used. The results show that it is possible to find a correlation between the measured temperature values and the tomographically measured relative resistivity changes in tissue-equivalent phantoms. But the uncertainty of the temperature coefficients, which has been observed, shows that the method has to be improved before it can be applied to clinical in vivo applications.</p>}},
  author       = {{Blad, B. and Persson, B. and Lindström, K.}},
  issn         = {{0265-6736}},
  keywords     = {{Electrical impedance tomography; Hyperthermia; Thermometry}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  pages        = {{33--43}},
  publisher    = {{Taylor & Francis}},
  series       = {{International Journal of Hyperthermia}},
  title        = {{Quantitative assessment of impedance tomography for temperature measurements in hyperthermia}},
  url          = {{http://dx.doi.org/10.3109/02656739209052877}},
  doi          = {{10.3109/02656739209052877}},
  volume       = {{8}},
  year         = {{1992}},
}