Bipolar radiofrequency ablation in ex vivo bovine liver with the open-perfused system versus the cooled-wet system

European Radiology
Jeong Min LeeByung Ihn Choi

Abstract

The aim of this study was to investigate the efficacy of bipolar radiofrequency ablation (RFA) with the open-perfused electrode and cooled-wet electrode. Bipolar RF was applied for 20 min to the ex vivo bovine liver using either the Berchtold system with two 16-gauge open-perfused electrodes (group A, n=15) or the Radionics system with two 15-gauge cooled-wet electrodes (group B, n=15). In both groups, two electrodes were placed 3 cm apart. The ablation zone was created by the RF energy delivered together with the infusion of 5% hypertonic saline (2 ml/min). The dimension of the ablation zone, its shape and the changes in the impedance and W s of two groups during the RFA were examined and documented. The vertical diameter (Dv) along the probe, the long-axis diameter (Dl) perpendicular to the Dv in the longitudinal plane and the short-axis diameter of the ablation zone (Ds) in the transverse plane through the midpoint between the tips of two probes were measured. The mean accumulated energy output in the Radionics system was higher than in the Berchtold system (159,887.0+/-36,423 W s vs. 87,555.1+/-86,787 W s). The difference was statistically significant (P<0.05). In group A, the impedance intermittently rose to above 700 Omeg...Continue Reading

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Oct 8, 2003·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Jeong Min LeeByung Ihn Choi

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Citations

Feb 16, 2005·European Radiology·Fernando BurdioRicardo Lozano
Apr 14, 2005·European Radiology·Jeong Min LeeByung Ihn Choi
Aug 2, 2011·Journal of Vascular and Interventional Radiology : JVIR·Michael D OrsiTyler J Green
Mar 29, 2006·Journal of Vascular and Interventional Radiology : JVIR·Jeong Min LeeByung Ihn Choi
Jun 27, 2006·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Jeong Min LeeByung Ihn Choi

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