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目的 应用螺旋CT评价射频治疗肺部恶性肿瘤的近期疗效。方法 对 40例肺癌 43个病灶射频治疗前、后肿瘤大小、密度的变化、肿瘤凝固性坏死的形态、范围及并发症进行观察。结果 40例肺癌射频治疗后 5min90 .69% (3 9/ 43 )的肺癌病灶扩大 ,6.9% (3 / 43 )病灶大小无变化 ,2 .3 % (1/ 43 )病灶缩小。 97.67% (4 2 / 43 )病灶密度减低 ,2 .3 % (1/ 43 )病灶密度增高。术后 2 0例肺癌随访 1～ 17个月 ,平均随访 4.3个月 ,5 5 % (11/ 2 0 )病灶较原病灶缩小 ,40 % (8/ 2 0 )病灶较术前增大 ,5 % (1/ 2 0 )病灶大小无变化 ,95 % (19/ 2 0 )肿瘤密度减低 ,CT值平均减低 13Hu ,5 %(1/ 2 0 )密度增高。结论 螺旋CT可准确评价肺癌射频治疗的效果 ,为临床治疗提供依据。
Objective To evaluate the short-term curative effect of radiofrequency on pulmonary malignant tumor by spiral CT. Methods The changes of tumor size and density before and after radiofrequency ablation of 43 lesions of 40 lung cancer patients were observed. The morphology, extent and complications of tumor coagulation necrosis were observed. Results The lung cancer lesions in 40 cases of lung cancer were enlarged after 5 minutes (90.99%) of radiofrequency ablation. The size of the lesion did not change in 6.9% (3/43) and the lesions in 2.3% (1/43) decreased. 97.67% (4 2/43) lesions reduced density, 2.3% (1/43) lesions increased density. Twenty cases of lung cancer were followed up for 1 to 17 months with an average follow-up of 4.3 months. Fifty-five percent (11/20) of the lesions were smaller than the original lesions and 40% (8/20) of the lesions were increased compared with that before the operation. There was no significant difference in the size of the lesions between the two groups (95% (19/20)). The average CT value was 13Hu and the density of 5% (1/2 0) increased. Conclusion Spiral CT can accurately evaluate the effect of radiofrequency ablation in lung cancer and provide the basis for clinical treatment.