多层螺旋CT重建术在周围型小肺癌诊断中的应用

目的探讨多层螺旋CT后处理技术在周围型小肺癌诊断中的价值。方法收集经病理证实的周围型小肺癌（直径≤20 mm）36例。全部行MSCT扫描,分别以MPR、SSD、VR技术进行重建,并与横断面薄层扫描对比分析。结果MPR在显示血管集束征、分叶征、细短毛刺征,SSD显示胸膜凹陷,VR显示血管集束征、分叶征中的敏感性均较横断薄层扫描提高10%以上。结论MSCT后处理技术在显示肺癌征象上较横断面图像具有较高的价值,特别是多种后处理方法联合应用对诊断周围型小肺癌意义重大。

Small peripheral lung cancer diagnostic with MSCT's post-processing techniques

Objective To evaluate the value of post-processing techniques of multi - slice spiral CT （MSCT） in diagnosis of small peripheral lung cancer. Methods The 36 patients of small peripheral lung cancer （ ≤ 20 mm in diameter） who had been proved by pathology. After MSCT scanning , 3D reconstruction images were made by MPR, SSD and VR, then compared with axial thin-slice images. Results The sensitivity of MPR on vascular notch sign, lobulation and spiculated sign were higher than that of axial thin-slice images. The sensitivity of SSD on peural sign were higher than that of axial thin-slice images. The sensitivity of VR on vascular notch sign and lobulation were higher than that of axial thin-slice images. Conclusion The post-processing techniques of MSCT have high value on diagnosis of small peripheral lung cancer. More information could be collected when many kinds of post-processing techniques were used.