Radiofrequency liver ablation: experimental comparative study of water-cooled versus expandable systems.

作者: Thierry de Baere , Alban Denys , Bradford Johns Wood , Nathalie Lassau , Mourad Kardache

DOI: 10.2214/AJR.176.1.1760187

关键词: Nuclear medicineIn vivoLesionAnatomyAblationThermal lesionReproducibilityMedicineCatheter ablationRadiofrequency ablationWater cooled

摘要: OBJECTIVE. We evaluate the uniformity and reproducibility of thermal lesion ablation quantify volume tissue destruction hemorrhage induced with two different commercially available radiofrequency devices.MATERIALS AND METHODS. A four-array anchor expandable needle electrode a triple-cluster cooled-tip were used to induce lesions in three explanted calf livers vivo eight swine livers. The sizes radiofrequency-induced macroscopically evaluated by measuring perpendicular dimensions immediately after experiment. Bleeding was weighing gauze swabs dry caused insertions.RESULTS. In liver, mean diameter 5.3 ± 0.7 cm for 3.7 0.4 (p = 0.042), which correspond approximate volumes 65.35 26.22 cm3 26.67 9.59 cm3, respectively < 0.002). vivo, diameter...

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