Fig. 2
From: Image-guided percutaneous ablation for the treatment of lung malignancies: current state of the art
Correct positioning of ablation probes in the target lesion, with schematic illustrations of each ablative alternative. a CT-guided percutaneous RFA treatment with a straight needle of a metastatic colon cancer lesion in the lower right lobe. Note the probe's correct positioning in the center of the tumor (arrow). b CT-guided percutaneous RFA treatment with an expandable needle of a colon cancer metastasis. The probe’s electrodes include the entire lesion (triangles). c CT-guided percutaneous MWA treatment with a single straight needle of a renal cancer metastatic lesion in the lower left lobe. As in (a), the probe passes through the center of the tumor (arrow). d CT-guided percutaneous CA of a stage I NSCLC in the lower right lobe with two straight ablation probes. If two or more ablation probes are used, they should be placed at the tumor's edges