摘要目的 评价多层螺旋CT后处理技术在周围型小肺癌诊断中的价值.方法 收集行MSCT扫描且经病理证实的周围型小肺癌(直径≤20 mm)36例,分别以MPR、SSD、VR技术进行重建,并与横断面薄层图像对比分析.结果 MPR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、分叶征敏感性均较横断薄层图像提高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更有不可替代的优势.

abstractsObjective To evaluate the value of post-processing techniquos of multi-slice spiral CT(MSCT) in diagnosis of small peripheral lung cancer. Methods 36 patients with small peripheral lung cancer(≤20mm in di-ameter) who had been proved by pathology were eoueeted. 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 vascularnotch sign,lobulation and spiculated sign was higher than that of axial thin-slice images. The sensitivity of SSD on peural sign was higher than that of axial thin-slice images. The sensitivity of VR on vascularnotch sign and lobulation was 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.