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Fig. 1A. —ETherm computer simulation model template
[5]. These computer simulations
were used to generate heating profiles for 12 min of radiofrequency
application using 3-cm tip, 17-gauge internally cooled electrode and 2,000-mA
output generator. Radiofrequency electrode (blue line) is centered
within variable-sized cylinder (colored rectangles, arrow)
representing tumors of variable radius. Inner compartment radius and
electrical conductivity were varied (r = 5-30 mm and 
[I] = 0.07-14 S/m
= siemens per meter, respectively) compared with background electrical
conductivity ([O] = 0.12 S/m = siemens per meter) of liver
[9].
