ABSTRACT
Objective To evaluate the value of CT-guided self-made positioning puncture device in radiofrequency ablation of liver tumors. Methods A total of 78 tumor foci from 64 patients with primary hepatocellular carcinoma treated with radiofrequency ablation from January 2010 to November 2014 were analyzed. Among them, 13 tumor diameters were 3.5-5.0 cm and 65 < 3.5 cm. The location and puncture of tumor lesion were performed by CT-guided positioning device, and the effect of puncture and lesion was evaluated by using tumor precise radiotherapy planning system. Radiofrequency ablation of tumor lesion was performed by tumor radiofrequency treatment system. Results The puncture error of all tumors in the space was 1-4 mm, the average puncture error was 2.9 mm, the complete ablation rate of tumor lesions was 93.59%(73/78), and there was no serious complication in the course of treatment. After treatment, the alpha-fetoprotein and liver function were significantly improved, and the differences were statistically significant (both P<0.05). At 1 month after surgery, CT found that no tumor and ablation was enhanced, at 3 months after surgery, CT showed that the arterial phase of all the tumor lesions did not strengthen, all of them were low-density lesions, no ablation recurred. The recurrence rates of 1, 2, 3, and 4 years after treatment were 17.9 %, 29.9 %, 45.9 % and 55.0 %. Conclusion CT-guided radiofrequency ablation with self-made puncture device is effective in the diagnosis of primary liver cancer, ablation is complete and safe.