ABSTRACT
Objective To explore the application value of maximum projection method of lesion area in CT-guided percutaneous microwave ablation of liver tumor. Methods CT-guided percutaneous microwave ablation was performed on 23 patients with liver tumor. All patients were divided into two groups. Fifteen patients underwent CT-guided percutaneous microwave ablation with maximum projection method of lesion area in study group, wihle 8 patients underwent CT-guided percutaneous microwave ablation with conventional method in control group. The times of puncture during operation, complications and the short-term efficacy of microwave ablation were compared between the two groups. Results Compared with control group, the times of puncture during operation decreased in study group ([1.27±0.46] times vs [3.62±0.74] times; t=-9.461, P<0.001). No complication occurred after ablation except for subcapsular hemorrhage in both of the two groups, and the incidence of subcapsular hemorrhage in study group was lower than that in control group (6.67% [1/15] vs 37.50% [3/8]; χ2=3.976, P=0.041). Furthermore, the complete ablation rate of liver tumor in study group was higher than that in control group within 6 months after operation (93.33% [14/15] vs 50.00% [4/8]; χ2=5.647, P=0.017). Conclusion Maximum projection method of lesion area can be used to guide puncture and predict the ablation range during CT-guided percutaneous microwave ablation of liver tumors, which is helpful for the improvement of complete ablation rate and reducing complications.