Study: Low-Power RF Ablation Can Be as Effective as High-Power

August 1, 2012 | Evaluations & Guidance


Radio-frequency ablation is often used to eradicate tumors in patients with hepatocellular carcinoma. Traditionally, a high power setting—often the ablation unit’s maximum setting—has been used to achieve necrosis of the tumors. However, higher power can have undesirable effects, including increasing the impedance of the tissue being treated to the point where the ablation unit automatically shuts down, interrupting treatment.

A study reported in the June British Journal of Radiologyinvestigated whether ablation at lower power was as effective as treatment at maximum settings. The study looked retrospectively at 101 patients who had undergone ablation using power settings above 120 W and 46 patients...

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