Please use this identifier to cite or link to this item: https://doi.org/10.1109/TBME.2012.2190511
Title: A multiscale model for bioimpedance dispersion of liver tissue
Authors: Huang, W.H.
Chui, C.K. 
Teoh, S.H. 
Chang, S.K.Y.
Keywords: Bioimpedance
blood flow
dispersion
liver
multiscale model
radio-frequency ablation (RFA)
surgery
Issue Date: 2012
Source: Huang, W.H., Chui, C.K., Teoh, S.H., Chang, S.K.Y. (2012). A multiscale model for bioimpedance dispersion of liver tissue. IEEE Transactions on Biomedical Engineering 59 (6) : 1593-1597. ScholarBank@NUS Repository. https://doi.org/10.1109/TBME.2012.2190511
Abstract: Radio-frequency ablation (RFA) has been used in liver surgery to minimize blood loss during tissue division. However, the current RFA tissue division method lacks an effective way of determining the stoppage of blood flow. There is limitation on the current state-of-the-art laser Doppler flow sensor due to its small sensing area. A new technique was proposed to use bioimpedance for blood flow sensing. This paper discusses a new geometrical multiscale model of the liver bioimpedance incorporating blood flow impedance. This model establishes correlation between the physical tissue structure and bioimpedance measurement. The basic Debye structure within a multilevel framework is used in the model to account for bioimpedance dispersion. This dispersion is often explained by the Cole-Cole model that includes a constant phase element without physical explanation. Our model is able to account for reduced blood flow in its output with changes in permittivity in gamma dispersion that is mainly due to the polarization of water molecules. This study demonstrates the potential of a multiscale model in determining the stoppage of blood flow during surgery. © 1964-2012 IEEE.
Source Title: IEEE Transactions on Biomedical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/54472
ISSN: 00189294
DOI: 10.1109/TBME.2012.2190511
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

5
checked on Dec 6, 2017

WEB OF SCIENCETM
Citations

5
checked on Nov 17, 2017

Page view(s)

34
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.