Figure 7: Graph presents relationship between the volume and fusion of coagulation and the duration of multipolar RF ablation as a function of preselected power output and applicator distance. The three-dimensional surface represents predicted volume of coagulation. Expected duration of RF ablation is color coded. The dark red line, which separates the color-coded area from the gray surface, corresponds to a probability that the zone of coagulation is 99% confluent, as predicted by Equation (4). The gray surface reflects the probability that the zone of coagulation is less than 99% confluent. For these combinations of power output and applicator distance, the predicted duration of RF ablation is not color coded; only the border of the different durations, as used for color coding, is given by the black lines.