Title :
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
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;
Conference_Titel :
Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4244-3296-7
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2009.5332651
