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Figure 4a: Graphs show the volume of coagulation and duration of multipolar RF ablation in relation to preselected power outputs and bipolar applicator distances. (a) Data points represent geometric mean of confluent volumes of coagulation at preselected power outputs and interapplicator distances. Line graph represents mathematic model for Equation (1). (b) Data points represent geometric mean of RF ablation time until an increase in tissue resistance occurred at preselected power outputs and interapplicator distances. Line graph represents mathematic model for Equation (2). Error bars indicate 95% confidence intervals. Coagulation volume and RF ablation time increased at lower power output levels and larger applicator distances.
