多层螺旋CT二维(2D)及三维(SSD)在周围型肺癌的临床应用

目的　探讨多层螺旋CT二维 (2D)和表面覆盖技术 (SSD)在周围型肺癌的临床应用价值。方法　 3 5例周围型肺癌行多层螺旋CT扫描 (层厚 1～ 2mm)和表面覆盖技术。结果　 2D图可显示周围型肺癌内部结构、分叶征、毛刺征、病灶周围血管、胸膜、纵隔结构的关系 ,但不能立体、直观显示肿瘤与周围器官的关系。SSD可多方向立体、直观清楚显示肿瘤表面征象和肿瘤与周围组织的关系。结论　以 2D螺旋CT图为基础 ,结合SSD对诊断周围型肺癌有重要的临床应用价值。

Clinical Application of Two Dimensions Reconstruction and Surface Shaded Display (SSD) with Multiple Slices Spiral CT in Diagnosis of Peripheral Pulmonary Carcinoma

Objective To assess the value of the clinical application of two dimensions reconstruction and surface shaded display (SSD) with multiple slices spiral CT in diagnosis of peripheral pulmonary carcinoma .Methods Peripheral pulmonary carcinomas in 35 cases were scanned by multiple slices spiral CT. The source images of CT were reconstructed by two dimensions reconstruction and surface shaded display (SSD) techniques.Results The images of two dimensions reconstruction could show the internal structure of lesions,lobulated sign burr sign,the vessels surrounding the focus,and the relation between focus and pleural as well as mediastina,but the relation of tumor and the organs surrounding the tumor could be showed not stereoscopically and directly.The images of SSD could not only reveal the relation between focus and surrounding organs in different dirctions but also revealed the features of pulmonary carcinoma stereoscopically and directly.Conclusion It is valuable for diagnosis of peripheral pulmonary carcinoma that application of SSD based on the images of two dimensions reconstruction.