PMID: 26815193Jan 28, 2016Paper

Analyze the factors influencing multi-electrode synchronous radiofrequency ablation via switching controller in ex vivo bovine liver

Zhonghua yi xue za zhi
Yanyang ZhangSenmiao Huang

Abstract

To investigate the effects of different electrode exposed end and different ablated time on lesion size of Cool-tip multi-electrode synchronous radiofrequency ablation via switching controller in ex vivo bovine liver. Twelve combinations of different electrode exposed end (2 cm, 3 cm and 4 cm) were used, and different ablated time (12, 16, 20 and 24 mins) was as experimental parameter. Ablated lesions in longitudinal diameter, transverse diameter and volume were measured. Analyze the factors influencing the lesion size with ANOVA or t test. The ablated lesions with 3 cm exposed end electrodes were more stable and the spheroidal rate is more close to 1. When ablated 24 mins with 4 cm exposed end electrodes, the longitudinal diameter, transverse diameter and volume were (7.66±0.21), (6.50±0.34) cm and (172±12) cm3, respectively. When the ablated time was constant, the lesions increased with the exposed end length of the electrodes increased. All the data among groups was statistically significant (P<0.01) unless the transverse diameters between 3 and 4 cm exposed end electrode. When the exposed end length of electrodes was constant, the lesions increased with the ablated time increased as a whole. But there was no significant dif...Continue Reading

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