通電制御下の肝腫瘍に対するオーダーメード化したRFA

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Purpose : The purposes of this study were to classify electricity process during percutaneous radiofrequecy ablation (P-RFA) for liver tumors, and to propose the usefulness of our ablation protocol.Objects and methods : 149 patients were diagnosed liver tumors from June 2004 to January 2006. Of these patients, total 282 nodules were treated with P-RFA Cool-tip type RFA system. During ablation, two electricity methods (standard protocol and our modified protocol) were compared to identify a suitable RF voltage for impedance of every nodule.Results : The voltage of the first break was 100 V in type 1 (151 nodules), over 100 V in type 2 (47 nodules), under 100 V in type 3 (84 nodules). Regardless of the electricity method, incomplete ablation rate was 0% in the type 1. In the type 2 and type 3, the rates were 9.4% and 14.3% in the standard protocol, v.s. 0%, 7.1% in our modified protocol, respectively.Conclusion : Our individualized electricity protocol, suitable voltage controlled ablation is more effective than standard protocol.
特定非営利活動法人 Microwave Surgery研究会の論文