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目的 探讨增强薄层CT扫描对孤立性肺结节 (SPN)良、恶性的诊断价值。方法 对 3 7例孤立性肺结节 (直径≤ 3cm)进行平扫和增强扫描 ,比较增强前后CT值变化 ,分析结节强化程度和强化类型对其良、恶性鉴别的意义 ;并对不同组织学类型肺癌强化程度和强化类型进行初步探讨。结果 恶性SPN强化值 ( CT值 )≥ 3 0HU ,良性SPN强化值 <3 0HU有显著性差异 ;不同组织类型肺癌强化程度和强化类型不同。结论 增强CT扫描能显示SPN的强化特征并有助于定性诊断 ,是鉴别SPN良、恶性的有效的影像学方法。
Objective To investigate the value of enhanced thin-slice CT in the diagnosis of benign and malignant solitary pulmonary nodules (SPN). Methods Totally 37 cases of solitary pulmonary nodules (diameter ≤ 3 cm) were scanned by plain scan and contrast-enhanced scan. The changes of CT value before and after contrast enhancement were compared. The significance of nodular enhancement and enhancement type in differentiating benign from malignant were analyzed. Learning type of lung cancer enhancement and strengthening of the type of preliminary study. Results The malignant SPN enhancement value (CT value) ≥ 3 0HU, benign SPN enhancement value <3 0HU significant difference; different types of lung cancer enhancement and enhancement types are different. Conclusion Enhanced CT scan can show the enhanced features of SPN and contribute to the qualitative diagnosis. It is an effective imaging method to distinguish between benign and malignant SPN.