Using ANSYS for three-dimensional electrical-thermal models for radio-frequency catheter ablation

Supan Tungjitkusolmun, Hong Cao, Jang Zern Tsai, John G. Webster

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations

Abstract

A three-dimensional finite element model was developed using ANSYS, a commercial finite element analysis software. The effect of temperature-dependent electrical and thermal conductivities to the FE model which incorporated cardiac muscle, blood, electrode and catheter body, was investigated in this study. Computer simulations were performed to calculate the temperature distribution during RF ablation. We compared the results of the two cases. For the first case, we used constant properties of the cardiac muscle. The other case had varying temperature dependent properties. The maximum temperatures found in the cardiac tissue for both cases are significantly different. The lesion depth and volume were larger for the second case. However, the locations of the maximum temperature of both cases were the same. A careful examination of the heat-transfer system during RF ablation is needed.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume1
StatePublished - 1997
EventProceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, USA
Duration: 30 Oct 19972 Nov 1997

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