A two-equation coupled system model for determination of liver tissue temperature during radio frequency ablation

Author

O´Neill, D.P. ; Peng, T. ; Payne, S.J.

Author_Institution

Dept. of Eng. Sci., Univ. of Oxford, Oxford, UK

fYear

2009

fDate

3-6 Sept. 2009

Firstpage

3893

Lastpage

3896

Abstract

A model is presented that is an alternative approach to the bio-heat equation for use in radio frequency heating of the liver. The model comprises both a tissue subvolume and a blood subvolume. Separate bio-heat equations are determined for each subvolume, but with an additional term exchanging heat between them, thus creating a coupled system. The derivation for the two coupled differential equations is outlined and sample simulations are presented to demonstrate the importance of considering the two subvolumes separately, even when the blood subvolume is a small fraction of the tissue subvolume.

Keywords

biological tissues; biothermics; differential equations; liver; radiofrequency heating; surgery; bio-heat equation; blood subvolume; differential equation; liver tissue temperature; radio frequency ablation; tissue subvolume; two-equation coupled system model; Algorithms; Biophysics; Catheter Ablation; Computer Simulation; Electric Conductivity; Heating; Humans; Liver; Models, Biological; Models, Statistical; Normal Distribution; Radio Waves; Temperature; Thermography; Time Factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE

Conference_Location

Minneapolis, MN

ISSN

1557-170X

Print_ISBN

978-1-4244-3296-7

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2009.5332651

Filename

5332651