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目的 研究动态增强CT扫描对鉴别诊断小肺癌的意义。方法 病理证实小肺癌 2 0例 ,炎性假瘤 6例 ,结核瘤 5例 ,术前均行CT平扫及注药后 30s、1、3、5、7min的动态增强扫描。根据病灶平扫CT值及不同时间增强扫描CT值 ,作出不同病变CT值的时间衰减曲线。结果 小肺癌与结核、炎症的平扫CT值无显著差异。增强扫描结核与小肺癌的CT强化程度有显著差异 ,但炎症与小肺癌的CT强化程度无显著差异。小肺癌、炎症、结核三种病变的时间衰减曲线形态不同。结论 动态增强CT扫描对鉴别诊断小肺癌有一定意义。
Objective To study the significance of dynamic contrast-enhanced computed tomography in the differential diagnosis of small lung cancer. Methods Twenty cases of small lung cancer, 6 inflammatory pseudotumor and 5 tuberculous tumor were confirmed by pathology. CT scan and 30, 1, 3, 5, 7min dynamic contrast-enhanced scanning were performed before operation. According to CT scan value of lesion and enhanced CT value at different time, the time decay curve of CT value of different lesion was made. Results Small lung cancer and tuberculosis, inflammation of the CT value of plain no significant difference. There was a significant difference in enhancement of CT enhancement between enhanced tuberculosis and small lung cancer, but there was no significant difference between inflammation and small lung cancer in CT enhancement. Small lung cancer, inflammation, tuberculosis lesions of the three types of time decay curve shape. Conclusion Dynamic contrast-enhanced computed tomography (CT-CT) has some significance for the differential diagnosis of small lung cancer.