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目的探讨多排螺旋CT(MSCT)二维与三维成像对周围型小肺癌(SPLC)瘤周征象的显示优势与不足。方法收集经病理证实的50例3 cm以下SPLC患者,常规扫描后对病灶1 mm重建、冠矢状位MPR重建、多方位表面遮盖(SSD)成像并达到清晰显示支气管树和血管树的效果,选择一幅瘤周征象最典型的图像分析。结果 (1)分叶征和小棘突征在横冠矢状面和SSD上基本一致。(2)毛刺征在横冠矢状面像上显示有优势。(3)胸膜凹陷征、支气管血管集束征在SSD像上显示最佳。(4)病灶与胸膜关系和瘤周模糊影在各种成像上基本一致。结论几种成像技术各有优势,良好结合能全面揭示瘤周的边缘形态特征并提高SPLC诊断准确性。
Objective To investigate the advantages and disadvantages of two-dimensional and three-dimensional imaging of MSCT on the peripheral signs of peripheral small lung cancer (SPLC). Methods 50 cases of pathologically confirmed SPLC patients under 3 cm were collected, 1 mm reconstruction of the lesion, MPR reconstruction of the sagittal and sagittal planes, and multi-directional surface occlusion (SSD) imaging were performed after routine scanning. The results showed that bronchial tree and vascular tree were clearly displayed, Select the most typical image of the tumor around the image analysis. Results (1) Leaf lobes and small spines in the sagittal crown and SSD are basically the same. (2) burr sign in the crown sagittal image shows an advantage. (3) Pleural indentation and bronchovascular bundles show the best on the SSD image. (4) The relationship between the lesion and the pleura and the peritumoral blur are basically the same on all kinds of imaging. Conclusion Several imaging techniques have their own advantages. A good combination of these techniques can fully reveal the edge morphological features and improve the diagnostic accuracy of SPLC.