抄録
There are various types of electrodes & generators for radiofrequency ablation (RFA). An internally cooled electrode is frequently used because it is simple and easy to use. However, the longitudinal major axis of the ablation zone is larger than the horizontal minor axis. Therefore, it is sometimes technically difficult to achieve a sufficient ablative margin without normal tissue damages.
A new RFA generator system with length-adjustable electrodes was approved for insurance purposes in March 2015. With this electrode, which can the change ablation volume with a single needle, multiple tumors in diameter of different sizes can be treated all at once without unnecessary organ damage. A total of 243 patients with 981 malignant tumors were treated with this new RFA generator system with the electrodes in our clinic from April 2015 to December 2017.
We discuss the usefulness of RFA for malignant tumors with length-adjustable electrodes.
