US and CT Guided Radiofrequency Ablation for the Treatment of Hepatic Tumors:Analysis of Therapeutic Effect

Objective To compare the efficacy of US-guided radiofrequency ablation with the efficacy of CT-guided radiofrequency ablation in treating hepatic malignancies. Methods During the period from July 2009 to September 2012 at authors' hospital,a total of 61 patients with hepatic malignancy received radiofrequency ablation( RFA). The clinical data were retrospective analyzed. Forty-two patients( 47 lesions in total) received US-guided radiofrequency ablation( US group),while 19 patients( 23 lesions in total) underwent CT-guided radiofrequency ablation. The median disease-free survival time and the recurrence rate at different stage were determined,and the results were compared between the two groups. Results The median disease-free survival time of US group and CT group was 7 months and 8 months respectively. The 6-month cumulated recurrence rate in US group and CT group was 31. 4% and 42. 9% respectively. The differences between the two groups were not statistically significant. During the follow-up period,the difference in the control rate of the ablated lesion between the two groups was not significant. Conclusion For the treatment of hepatic malignancies,US-guided radiofrequency ablation and CT-guided radiofrequency ablation has the similar therapeutic effect.