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13 March 2018 Technical note: on cardiac ablation lesion visualization for image-guided therapy monitoring
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Abstract
The delivery of insufficient thermal dose is a significant contributor to incomplete tissue ablation and leads to arrhythmia recurrence and a large number of patients requiring repeat procedures. In concert with ongoing research efforts aimed at better characterizing the RF energy delivery, here we propose a method that entails modeling and visualization of the lesions in real time. The described image-based ablation model relies on classical heat transfer principles to estimate tissue temperature in response to the ablation parameters, tissue properties, and duration. The ablation lesion quality, geometry, and overall progression is quantified on a voxelby-voxel basis according to each voxel’s cumulative temperature and time exposure. The model was evaluated both numerically under different parameter conditions, as well as experimentally, using ex vivo bovine tissue samples. This study suggests that the proposed technique provides reasonably accurate and sufficiently fast visualizations of the delivered ablation lesions.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cristian A. Linte, Jon J. Camp, Maryam E. Rettmann, Dieter Haemmerich, Mehmet K. Aktas, David T. Huang, Douglas L. Packer, and David R. Holmes "Technical note: on cardiac ablation lesion visualization for image-guided therapy monitoring", Proc. SPIE 10576, Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling, 105760N (13 March 2018); https://doi.org/10.1117/12.2322523
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