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Fig. 7. —Thermal response contours versus radiofrequency generator
output. This figure illustrates effects on radiofrequency heating based on
available radiofrequency generator output. As expected, larger volumes of
ablation are possible with increasing radiofrequency generator output.
Simulated data for 4,000-mA generator not only shows increase in
radiofrequency heating but also stronger interaction under conditions of
greater electrical conductivity within larger volume of tissue surrounding
electrode than is evidenced for low- and medium-power generators. There is
increased height of surface contour and peak shifts to right. Note larger
color scale for this figure. S/m = siemens per meter.
