肺癌结节螺旋CT动态强化特点及其临床价值

Characteristics and clinical value of dynamic enhanced CT in lung cancer nodule

关键词:  肺癌  螺旋CT  动态增强

Key words:  lung cancer  spiral CT  dynamic enhancement

摘要:

［目的］ 探讨以孤立结节为主要表现的肺癌的螺旋CT动态强化特点，并结合国内外文献讨论其临床意义。［方法］ 对比分析30例肺癌结节患者的螺旋CT动态增强扫描及自身CT平扫，重点观察原发灶动态增强各时相的CT值，根据CT值绘出动态增强曲线。［结果］30例肺癌结节增强后的CT值均随时间逐渐上升，峰值在1～3 min内出现，到达峰值后缓慢下降，最大增强值均数为（31.4±10.3）Hu。［结论］肺癌结节螺旋CT动态强化特点是强化效应较明显，最大增强值多在20 Hu以上，其时间-密度曲线为慢升慢降的抛物线型，这些强化特点具有一定的鉴别诊断价值。

Abstract:

［Objective］To evaluate the characteristics of dynamic enhanced CT in lung cancer nodule，and review related medical science literature to discuss its clinical value.［Methods］Collected and analyzed to the spiral CT dynamic enhancement findings and it's routine scan findings of 30 lung cancer nodule cases, observe the CT values of the primary affection in each time,and draw dynamic enhancement time-density curves.［Results］The average of the maximum CT values of the 30 cases was （31.4±10.3）Hu, the CT values was gradual increased and slowly decreased,the maximum value appears during the period of 1～3 min.［Conclusion］The CT enhanced degree of lung cancer nodule is obvious,it’s largest enhancement value is most more than 20 Hu,and the time-density curves looks as a parabola and showed a slowly progress and than decreased slowly, the dynamic enhanced characteristics have some useful in the differentiation diagnosis of solitary pulmonary nodule.