CAJ | 학술논문

目的探讨螺旋CT动态增强扫描对肺孤立性结节病变的良、恶性鉴别诊断价值.方法经病理证实的62例肺孤立性结节,平扫后,以2 ml/s速率注入造影剂后1、2、3、4、5 min薄层扫描.分析强化值、时间-密度曲线及强化形态对良、恶性结节的鉴别价值.结果恶性结节的强化值(49±15)Hu明显高于良性结节(18±16)Hu(P＜0.01).周围型肺癌的主要强化形态是完全性强化及周围性强化.恶性结节增强后CT值立即升高,2 min形成强化高峰,然后逐渐下降,而良性结节特别是结核球增强后CT值缓慢上升,无明显峰值出现.结核球的主要强化形态是无强化及包膜样强化,占92.3%.结论强化值≤15 Hu提示良性结节;强化值＞20 Hu考虑恶性结节.动态增强CT对周围型肺癌与结核球的鉴别有较高价值.
목적 탐토라선CT동태증강소묘대폐고립성결절병변적량、악성감별진단개치.방법 경병리증실적62례폐고립성결절,평소후,이2 ml/s속솔주입조영제후1、2、3、4、5 min박층소묘.분석강화치、시간-밀도곡선급강화형태대량、악성결절적감별개치.결과 악성결절적강화치(49±15)Hu명현고우량성결절(18±16)Hu(P＜0.01).주위형폐암적주요강화형태시완전성강화급주위성강화.악성결절증강후CT치립즉승고,2 min형성강화고봉,연후축점하강,이량성결절특별시결핵구증강후CT치완만상승,무명현봉치출현.결핵구적주요강화형태시무강화급포막양강화,점92.3%.결론 강화치≤15 Hu제시량성결절;강화치＞20 Hu고필악성결절.동태증강CT대주위형폐암여결핵구적감별유교고개치.
Objective To analyze the feature of the solitary pulmonary nodules at dynamic contrast-enhanced spiral CT. Methods Sixty-two patients with solitary pulmonary nodules proved by pathology were studied. Thin-section CT scans were obtained before and after enhancement 1,2,3,4 and 5 minutes. Results Malignant nodules enhanced (49±15)Hu significantly more than benign nodules (18±16)Hu. The major enhancement pattern of peripheral lung carcinoma was complete enhancement, a little show peripheral enhancement. Tuberculoma show capsular enhancement or non enhancement. Conclusions Absence of significant lung noldue enhancement (≤15 Hu) at CT is strongly predictive of benignity.Malignant nodules enhanced significantly more than benign nodules. Dynamic contrast enhanced CT is useful in the differential diagnosis of lung carcinoma and tuberculoma.