Figure 1d:

Images in a 57-year-old woman with a breast cancer liver metastasis located in segment V and treated with RF ablation with an internally cooled electrode needle. As of this writing, the patient has survived for 12 years. (a) Preablation portal venous phase CT image shows a 1.3-cm-diameter tumor (arrow) in the right anteroinferior segment. (b) Portal venous phase CT scan obtained the day after RF ablation shows a 2.9 × 3.7-cm nonperfused area (necrosis) at the tumor site. The ablation was considered complete. (c, d) CT images obtained at (c) 3- and (d) 6-year follow-up show progressive involution of coagulation.