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To evaluate the ex vivo ablation zones created in hepatic tissue using monopolar and bipolar gas- and water-cooled radiofrequency (RF) applicators.RF ablations were performed on ex vivo bovine liver tissue using closed circuit water-cooled and closed circuit cryogenically cooled (via CO 2 enthalpy) 15-ga linear-needle applicators. Both monopolar and bipolar electrode applicators were used,...
We present a model for the optimal placement of mono- and bipolar probes in radiofrequency (RF) ablation. The model is based on a system of partial differential equations that describe the electric potential of the probe and the steady state of the induced heat distribution.To optimize the probe placement we minimize a temperature-based objective function under the constraining system of partial differential...
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