多层螺旋CT对血管集束征显示及对周围型肺癌的诊断

Evaluation of vascular Convergence sign (VCS) with Multi-slice Spiral Computed Tomography in Diagnosing Peripheral Lung Cancer

目的:探讨多层螺旋CT对血管集束征的显示及对周围型肺癌的诊断价值。方法:对58例周围型肺癌和18例其他孤立肺结节行多层螺旋CT平扫及增强,然后按层厚1.25mm重组,并按血管走行方向作多平面重组,重点观察肿块外周血管集束征的CT表现。结果:血管集束征在周围型肺癌的出现率为94.8((55/58)比其他孤立肺结节50%(9/18)高。结论:多层螺旋CT扫描后薄层重组结合多平面重组能良好地显示血管与肿瘤的关系,血管集束征对周围型肺癌有诊断价值。

Objective：To evaluate the features and usefulness of vascular convergence sign with multi-slice spiral computed tomography （MSCT） in diagnosing peripheral lung cancer. Methods：58 cases of peripheral lung cancer and 18 cases of other solitary pulmonary nodule undertook plain and enhanced MSCT. Thin-section image reconstruction with 1.25 mm thickness together with multi-planar reconstruction （MPR） was done in all cases. The relationship between the tumor or nodule and the peripheral vessels was analyzed. Results： The appearance of VCS in peripheral lung cancer reached 94. 8%（55/58） which was higher than that of other solitary pulmonary nodules 50%（9/18）. Conclusion： MSCT scanning followed by thin section image recon struction and MPR can clearly reveals the relation between vessels and tumors. VCS is valuable for diagnosing peripheral lung cancer.