螺旋CT表面覆盖法成像对胰腺癌诊断价值的探讨

An Investigation of SSD Spiral CT in Diagnosis of Pancreatic Carcinoma

目的评价螺旋ＣＴ表面覆盖法（ＳＳＤ）在胰腺癌诊断中的价值。材料与方法对２０例经病理及临床证实的 胰腺癌患者进行螺旋ＣＴ薄层增强扫描，并对原始图像行ＳＳＤ法三维重建。结果２０例胰周血管ＳＳＤ成像良好，下腔静脉、门静脉及其１级属支、腹主动脉及其２级分支的显示率为６５％～１００％；ＳＳＤ像均能显示胰腺肿瘤与邻近结构的三维解剖关系，包括周围血管、胆胰管等，表明上述结构的受侵、受压及其并发症。结论ＳＳＤ图像可以明确地显示病灶及胰周结构的空间关系，弥补轴位图像的不足，更有助于诊断和指导手术。

Purpose To investigate the technique of shaded surface display(SSD) spiral CT (SCT) in the diagnosis of pancreatic carcinoma. Materials and methods Twenty cases with pancreatic carcinoma underwent thin -section SCT. and the technique of SSD was applied. Results Visualization on SSD of peripancreatic vessels was satisfied (range 65 % --100% ) ; The 3D relationship of mass,normal pancreas and peripancreatic structures were also well. Conclusion Using both SSD and original images,mass and peripanceatic structures would be visualized vividly and be useful for diagnosis and surgery.