Key result
Computational model of multielectrode phased RF ablation accurately predicts in vitro tissue temperatures within ~2°C.
Why the study?
A unique RF cardiac ablation system was developed to safely create large uniform lesions while controlling lesion depth, requiring computational and experimental validation.
Population
Computational finite element model and in vitro bovine myocardium
Comparison
Five operating modes of a temperature-controlled, multiphase, duty-cycled RF generator
Design
Computational modeling compared with in vitro experimental validation
Authors
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May inform precise RF ablation development; leaves open in vivo and clinical validation of lesion prediction.
A validated computational model of a multielectrode, phased, duty-cycled RF ablation system accurately predicts tissue temperature and lesion depth, suggesting potential for high-fidelity clinical control of ablation lesions.
Lau et al. (2010) studied cardiac arrhythmias. Radiofrequency ablation with a multielectrode, phased, duty-cycled system was evaluated on Tissue temperature measurements. A computational model of a multielectrode, phased, duty-cycled RF ablation system closely matched in vitro tissue temperatures (mean error 1.9°C, correlation coefficient 0.97).
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