Szabolcs Deladi

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BACKGROUND Assessment of lesion size and transmurality is currently via indirect measures. Real-time image assessment may allow ablation parameters to be titrated to achieve transmurality and reduce recurrences due to incomplete lesions. OBJECTIVE The purpose of this study was to visualize lesion formation in real time using a novel combined ultrasound(More)
The motivation of the project, which generated the subjects discussed in this dissertation, is<lb>introduced. Decisions concerning the approach taken to meet the aim of the project are<lb>explained. Finally the structure of the thesis is presented. 1.1. Motivation of the work The work presented in this dissertation is generated in the frame of the(More)
INTRODUCTION Steam pops are a risk of irrigated RF ablation even when limiting power delivery. There is currently no way to predict gas formation during ablation. It would be useful to visualize intramyocardial gas formation prior to a steam pop occurring using near-field ultrasound integrated into a RF ablation catheter. METHODS AND RESULTS In an in vivo(More)
BACKGROUND Safe and successful radiofrequency catheter ablation depends on creation of transmural lesions without collateral injury to contiguous structures. Near-field ultrasound (NFUS) imaging through transducers in the tip of an ablation catheter may provide important information about catheter contact, wall thickness, and ablation lesion formation. (More)
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