Comparison of ablation performance between dual internally cooled wet tip and conventional dual internally cooled tip radiofrequency electrodes: an experimental study in <i>ex vivo</i> bovine liver

Objective To evaluate the performance of dual internally cooled wet tip (ICWT) radiofrequency electrodes in comparison to (ICT) electrodes.Methods Twenty ablation zones were created for each type electrodes. Planned procedure time was 6 min. Diameters zone along x-, y-, and z-axes (Dx, Dy, Dz), sphericity, quantitative sphericity measurement, volume measured compared between two electrode types. Circularity on surface with x- z- axes (zx plane) amount energy applied also compared.Results Dx Dz significantly longer ICWT than those ICT (Dx: 3.0 vs. 2.8 cm, p = .018; Dz: 2.7 2.3 < .001, respectively). Dy not different (3.0 2.9 .220). Moreover, 85% (17/20) 30% (6/20) from spherical (p .001), respectively. Quantitative measurement showed that more (0.962 0.881, .001). The higher (11.55 9.45 cm3, .003). zx plane circular (0.907 0.883, .028). bigger (18508 16998 WS, .003).Conclusion Dual better able create larger