What question did this study set out to answer?

To develop and experimentally validate a finite-element time-domain numerical model that predicts temperature elevation and lesion dimensions during cardiac radio-frequency ablation.

January 1, 1994IEEE Transactions on Biomedical Engineering

Numerical model for radio-frequency ablation of the endocardium and its experimental validation

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Why the study?

Does the proposed finite-element time-domain numerical model accurately predict temperature distribution and electrode resistance during RF ablation compared to experimental measurements?

Population

Numerical model and tissue-equivalent material for radio-frequency (RF) ablation of the endocardium

Comparison

Radio-frequency ablation using various electrode… vs Numerical calculations compared to experimental…

Design

Preclinical

Authors

SLS. LabontéNational Research Council Canada

Discussion

Member takes

Implication

Supports preclinical RF ablation modeling; leaves open clinical translation pending in vivo validation.

Key Points

To develop and experimentally validate a finite-element time-domain numerical model that predicts temperature elevation and lesion dimensions during cardiac radio-frequency ablation.
Formulated a transient finite-element model incorporating blood flow cooling, dynamic tissue geometry, temperature-dependent material properties, and a thermal damage function.
Validated the numerical predictions against experimental tests measuring temperature distributions and time-dependent electrode resistance in a tissue-equivalent material across multiple electrode configurations and electrical excitations.
Numerical calculations showed consistent agreement with experimental temperature and electrical resistance measurements under all tested electrode and excitation conditions.
The model successfully captured the nonlinear thermal dynamics and transient lesion growth caused by RF electrical current and blood cooling.

Structured PICO

Does the proposed finite-element time-domain numerical model accurately predict temperature distribution and electrode resistance during RF ablation compared to experimental measurements?

Population

Numerical model and tissue-equivalent material for radio-frequency (RF) ablation of the endocardium

Intervention

Radio-frequency (RF) ablation (< 1MHz) using various electrode configurations and electrical excitations

Comparator

Numerical calculations compared to experimental measurements

Outcome

Temperature distribution and time-dependent electrode resistancesurrogate

A finite-element time-domain numerical model accurately predicts temperature distribution and lesion extent during RF ablation, validated by experimental tissue-equivalent models.

Cite This Study

S. Labonté (1994) studied this question.

synapsesocial.com/papers/6a714ff42163a0a01bc5770e https://doi.org/10.1109/10.284921

Topics

AF ablation outcomes

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Numerical model for radio-frequency ablation of the endocardium and its experimental validation

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Numerical model for radio-frequency ablation of the endocardium and its experimental validation

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Topics

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