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目的研究动态CT增强对肺癌的鉴别诊断意义。方法对25例肺癌及35例肺良性病变行CT增强扫描,并对照其病理标本进行分析,研究肺癌动态增强的表现与病理结果之间的相关性。结果肺癌组CT强化峰值、病灶与主动脉比值、强化形态及时间密度曲线与肺良性病变组存在明显差异。CT强化峰值与肺癌组织学类型、临床分期及淋巴结转移之间密切相关。结论CT动态增强检查可以反映肺癌的血供特点,可根据强化峰值来推测肿瘤的侵袭及转移情况。
Objective To study the differential diagnosis of lung cancer by dynamic CT enhancement. Methods Twenty-five patients with lung cancer and 35 patients with benign lung disease underwent CT-enhanced scanning. The pathological specimens were analyzed for the correlation between the dynamic enhancement of lung cancer and the pathological findings. Results There was a significant difference in the peak value of CT enhancement, the ratio of lesion to aorta, the shape of enhancement and the time density curve in lung cancer group and benign lung disease group. CT-enhanced peak and lung cancer histological type, clinical stage and lymph node metastasis are closely related. Conclusions CT dynamic contrast-enhanced examination can reflect the characteristics of blood supply of lung cancer, and the invasion and metastasis of tumor can be inferred based on the enhanced peak value.