Key result
High intensity focused ultrasound (HIFU) ablation failed to achieve sustained conduction block in rabbit atrial preparations (0% at 10 minutes) due to acoustic radiation force and cavitation.
Why the study?
What are the mechanisms of failure for high intensity focused ultrasound (HIFU) ablation in cardiac tissue?
What are the mechanisms of failure for high intensity focused ultrasound (HIFU) ablation in cardiac tissue?
HIFU ablation failure in cardiac tissue is driven by acoustic radiation force, acoustic cavitation, and inconsistent thermal deposition leading to lesion discontinuity.
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HIFU should not yet enter clinical cardiac ablation trials; leaves open parameter optimization to mitigate acoustic tissue effects in models.
Laughner et al. (2012) studied Cardiac arrhythmias (n=16). High intensity focused ultrasound (HIFU) ablation was evaluated on Sustained conduction block. High intensity focused ultrasound (HIFU) ablation failed to achieve sustained conduction block in rabbit atrial preparations (0% at 10 minutes) due to acoustic radiation force and cavitation.
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