动态增强CT扫描对肺结核瘤的诊断价值(英文)  

Study on dynamic contrast-enhanced CT of lung tuberculoma

作　　者：夏宇[1] 杨迎[1] 刘进康[1] 曾纪珍[1] 

机构地区：[1]中南大学湘雅医院放射科,湖南长沙410008

出　　处：《中国现代医学杂志》2004年第14期23-26,30,共5页China Journal of Modern Medicine

摘　　要：目的　探讨动态增强CT扫描对肺结核瘤的诊断价值。方法　经病理及临床证实的肺结核瘤 3 8例 ,平扫后 ,以 2ml/s速率注入造影剂后 1～ 5min薄层扫描。分析强化值、时间一密度曲线及强化形态。将CT表现与富血管度作相关性分析。结果　 3 8例结核瘤增强后扫描除 2例外 ,强化值均小于 2 0Hu ,与周围型肺癌、炎性假瘤对比均有显著性差异 (P <0 .0 1)。结核瘤的主要强化形态是无强化及包膜样强化 (分别为 19例、16例 ) ,占 92 % ,完全性强化及周围性强化分别为 2例、1例。结核瘤的无强化区为干酪样坏死灶 ,结核瘤的不同强化形态取决于包膜的富血管、完整度及厚度。结核瘤的时间密度一曲线低平 ,无明显峰值。结论　结核瘤动态增强CT扫描在强化值、时间一密度曲线及强化形态均有一定特征 ,可与周围型肺癌及炎性肿块相鉴别。Objective:To analyze the feature of lung tuberculoma at dynamic contrast-enhanced CT. Methods:38 patients of lung tuberculoma proved by pathologically or clinically were studied.Thin-section CT scans were obtained before and 1,2,3,4 and 5 minutes after injection of contrast material. Results:In 38 cases of lung tuberculoma,maximum enhanced CT value in 36 cases(95%) was less than 20 Hu, which was lower than that of peripheral pulmonary carcinoma or inflammatory mass( P <0.01). The main enhancement pattern(92%) was capsula enhancement(16/38) and no enhancement(19/38). The non enhancement area of tuberculoma was due to caseous necrosis. The enhanced pattern of tuberculoma was lied on vascularity,integrity and thickenss of capsula.Conclusion:Tuberculoma can be differentiated from peripheral pulmonary carcinoma or inflammatory mass by the characteristic of maximum enhanced CT value,enhanced pattern and time-attenuation curves.

关 键 词：肺结核瘤 体层摄影 X线计算机 

分 类 号：R521[医药卫生—内科学]