摘要
目的 :探讨动态增强曲线在周围型肺癌鉴别诊断中的价值。材料和方法 :研究 116例孤立性肺结节 (直径≤4cm) ,其中肺癌 88例 ,结核球 10例 ,炎性结节 15例 ,良性肿瘤 3例。在注入造影剂 1 5ml/kg前后 ,对病灶进行同层动态扫描 ,测量增强前后各次扫描时病灶的CT值 ,根据CT值绘出动态增强曲线。结果 :三者动态增强曲线的峰值中每两者之间均有显著差异 ,肺癌的增强峰值高于结核球而低于炎性结节。肺癌的动态增强曲线多呈慢升慢降型 ,抛物线状 ;炎性结节多呈快升慢降或快升快降型 ;结核球多呈一低平曲线。炎性结节达峰值的时间较肺癌快。结论 :周围型肺癌的动态增强曲线峰值、达峰值的时间、曲线形态不同于结核球、炎性结节 。
Purpose: To investigate the value of the time intensity curves in diagnosis of peripheral lung carcer. Materials and Methods: 116 patients with SPNs (diameter ≤4cm) had 88 lung carcers, 10 tuberculomas, 15 inflammatory nodules, 3 benign neoplasms. Serial single slice dynamic scans were obtained with CT before and after injection of 100ml contrast material, on which the time intensity curves were produced. Results: Comparison of the maxim degree of enhancement of lung cancers, inflammatory nodules and tuberculomas showed that the difference between each other of them were statistical significantly (p<0.05), Most lung cancers enhanced statistically more than tuberculomas but less than inflammatory nodules, The time intensity curves looked as a parabola and showed a slowly progress and then decreased slowly; Most inflammatory nodules showed a rapid increase and then decreased rapidly or slowly; The time intensity curve for tuberculomas in low and smooth. The time intensity curves for inflammatory nodules reached peak height earlier than that for lung cancers. Conclusion: The maxim degree of enhancement and the time of reaching peak height and the types of time intensity curves for lung carcer is different from tuberculomas and inflammatory nodules, which may be helpful in the differentiation of peripheral lung cancers.
出处
《中国医学影像学杂志》
CSCD
2002年第1期11-14,共4页
Chinese Journal of Medical Imaging
