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Electrical conductivity measurement in Thiel-embalmed tissue model : relevance to radiofrequency ablation

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baker2014electroniclett1125.pdf (484.0Kb)
Date
31/07/2014
Author
Wang, Z.
Luo, H.
Nick, M.
Gueorguieva, M.
Andre, P.
Baker, R.T.
McLean, D.
Brown, S.
Cuschieri, A.
Keywords
QD Chemistry
R Medicine
Metadata
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Abstract
Thiel-embalmed human cadaveric specimens are used widely for biomedical scientific investigation. This Letter reports electrical impedance measurements of Thiel-embalming solutions from 1 Hz to 32 MHz. Compared with other solutions studied, Thiel solution has the lowest impedance throughout the test spectrum. The electrical conductivity of a Thiel-embalmed liver sample exhibited a relatively flat frequency response from 100 to 500 kHz, which is the frequency range used for electro-surgery and radiofrequency tumour ablation (RFA). It measured 5 Sm-1 compared with 0.22 Sm-1 obtained from ex-vivo fresh pig liver. Using finite element modelling and experimental evaluation, the ablation zone obtained from the Thiel-embalmed liver sample was extremely small due to its much higher conductivity. Hence, it is concluded that Thiel-embalmed tissue cannot be used as a reliable model for RFA evaluation.
Citation
Wang , Z , Luo , H , Nick , M , Gueorguieva , M , Andre , P , Baker , R T , McLean , D , Brown , S & Cuschieri , A 2014 , ' Electrical conductivity measurement in Thiel-embalmed tissue model : relevance to radiofrequency ablation ' , Electronics Letters , vol. 50 , no. 16 , pp. 1125-1127 . https://doi.org/10.1049/el.2014.1934
Publication
Electronics Letters
Status
Peer reviewed
DOI
https://doi.org/10.1049/el.2014.1934
ISSN
0013-5194
Type
Journal article
Rights
© 2014. The Institution of Engineering and Technology. This paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
Description
PA gratefully acknowledges SUPA for funding his Advanced Research Fellowship.
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/6141

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