ArticleIn vivo (Athens, Greece)
Increasing Ablation Area Using the Arfa Ablation System: An Experimental Study in the Bovine Liver.
Article in In vivo (Athens, Greece). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
BACKGROUND/
aimExpanding the ablation area remains a critical challenge in the treatment of hepatocellular carcinoma. Herein, we investigated the utility of various radiofrequency ablation (RFA) protocols for increasing ablation areas, using the bovine liver as a model. MATERIALS AND
methodsA bovine liver (7.2 kg) placed in a stainless-steel tray was subjected to RFA using an arfa 17-G electrode. The starting and increment wattages were varied in the linear mode. RFA was stopped after one break. The size of the discolored area, indicating thermally coagulated tissue, was measured along both the vertical and horizontal axes. The ablated area and total heat generated were calculated.
resultsRFA conducted using a 30-mm needle yielded sufficient ablation areas along both the transverse and longitudinal diameters when using a low-power start at 20 W with a 5 W/min linear increase protocol. Similarly, using a 20-mm needle, a low-power start at 20 W with a 5 W/min linear increase protocol also yielded sufficient ablation areas. Although the ablation time was prolonged in both cases, the output wattage at the breakpoint and average wattage were low.
conclusionAblation using the arfa linear mode method (
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