Radiofrequency Ablation of the Renal Tumors

Abstract

Radiofrequency ablation of the renal tumors considered the least invasive technique to get rid of malignancies cells. High-frequency waves in the range of 0.9 – 2.5 GHz were applied to the cancerous cells. Consequently, resistive heating was generated used to destroy the cancerous cells. In this paper, this technique had been applied to a 3D accurate model of the kidney with similar dimensions and shape including its artery, vein, and ureter. The next step was to design an RF probe to get high values of specific absorption rate for the cancerous cells and minimum values for the normal cells of the kidney. Simulation results showed that the shape of the model has the greatest effect on the resulting lesion volume and shape. In this work, the internally cooled electrode using Gil was designed from aluminum material with its tines revolved to 270° and Gaussian signal as the excitation signal.