Geometry and Temperature Distribution during Radiofrequency Tissue Ablation: An Experimental ex Vivo Model
作者： Leonid Lobik , Raymond J. Leveillee , Michael F. Hoey
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摘要: Purpose: To investigate the temperature distribution and geometry of lesions created by radiofrequency (RF) tissue ablation. Materials Methods: We developed an ex-vivo thermal model based on ability egg whites to coagulate at 62° 65°C. This property allows us observe record formation "lesions" different commercially available RF generators probes. Results: The Radionics Cool-Tip™ system were mostly cylindrical or barrelshaped, while RITA® StarBurst XL™ XLi™ electrodes produced cone-like mushroom-shaped lesions. time required achieve maximum lesion size was between 3 5 minutes in most trials. stopped when thermodynamic equilibrium achieved. Conclusions: does not correlate precisely with manufacturer reports, which describe spherical for both systems. 12-minute treatment cycle recommended company's algorithm may be necessary because lesio...
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