A Comparison of US-guided Percutaneous Radiofrequency Ablation of Medium-sized Hepatocellular Carcinoma with a Cluster Electrode or a Single Electrode with a Multiple Overlapping Ablation Technique

In US-guided percutaneous RF ablation of medium-sized HCCs, the cluster electrode showed better local therapeutic efficacy than the single electrode with multiple overlapping ablations, probably because of the favorable shape of the ablation zone; however, complications occurred more frequently.