1. In-Vitro Characterization of Ablation Lesions Using OCT

    In-Vitro Characterization of Ablation Lesions Using OCT

    Radiofrequency ablation (RFA) is a clinical procedure that destroys tissue to cure cardiac arrhythmias. Presently, there is no direct method to monitor RFA lesion formation in real-time. Real time direct monitoring of the tissue could guide ablation and prevent complications such as tissue disruption that leads to perforation. Optical coherence tomography (OCT) provides real-time subsurface imaging with high spatial resolution in three dimensions. We hypothesized that OCT can distinguish necrotic ablated tissue from viable cardiac tissue. Freshly excised right ventricular wedges from swine were placed in a bath with phosphate buffered saline (PBS) maintained at 37°C with super-perfusion flow ...

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