孤立性肺结节CT动态增强扫描的实用研究  

The application research of dynamic enhanced CT in solitary pulmonary nodule

作　　者：金志发[1] 罗良平[2] 陈金城[2] 蔡春仙[2] 张绪辉[2] 

机构地区：[1]中山大学附属江门医院放射科 [2]暨南大学附属第一医院医学影像中心

出　　处：《中国CT和MRI杂志》2009年第4期8-11,共4页Chinese Journal of CT and MRI

摘　　要：目的探讨孤立性肺结节CT动态增强扫描的实用技术方法及其诊断应用价值。方法经病理或临床证实的98例孤立性肺结节,行CT动态增强扫描,延时时间为30、90、180、300、480秒,计算结节病灶的增强值及结节/主动脉强化峰值比;描绘三组结节动态增强扫描时间-密度曲线,比较其形态特点。结果恶性和活动性炎性结节的增强值及结节/主动脉强化峰值比明显高于良性结节,差异具有统计学意义(P=0.000),但二者之间的差别无统计学意义。三组结节常规动态增强扫描的时间-密度曲线形态不同,有利于三组结节间的鉴别诊断。结论CT动态增强扫描对肺内三组SPN有较高诊断价值。Objective To explore the technical metheds in application and it＇ s diagnosis value for solitary pulmonary nodule. Methods Ninety-eight patients with pathologically or clinically diagnosed solitary pulmonary nodule underwent dynamic enhanced CT scan, the delay time were 30s, 90s, 180s, 300s, 480s. According to dynamic enhanced examination, the enhanced value and ratio of nodule-to-aorta peak enhance- ment were calculated, the characteristics of time-density curve（TDC） of the three groups nodule were studied. Results The enhanced value and nodule-to-aorta peak enhance- ment ratios of malignant and inflammatory pulmonary nodule were higher than that of benign group respectively（p=0.000）. But the difference between malignant group and active inflammatory group had no statistical significance. From the characteristics of TDC shape deriving from dynamic enhanced CT scanning, the malignant nodule could be differentiated from inflammatory and benign nodule. Conclusion Dynamic enhanced CT scan offers to the good diagnosis value for solitary pulmonary nodule.

关 键 词：孤立性肺结节 体层摄影术 X线计算机 

分 类 号：R563[医药卫生—呼吸系统] R814.42[医药卫生—内科学]