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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。
Objective To evaluate the value of spiral CT surface coverage (SSD) in the diagnosis of pancreatic cancer. Materials and Methods Twenty patients with pathologically and clinically confirmed pancreatic cancer underwent thin-slice spiral CT scans. The original images were reconstructed by SSD method. Results The peripancave vessels, portal vein and their first-grade branches, abdominal aorta and their second-grade branches showed a good imaging rate of 65% -100% in SSDs of 20 cases. SSD images showed the relationship between the pancreatic neoplasms and adjacent structures The three-dimensional anatomical relationship, including the surrounding blood vessels, pancreatic duct, etc., indicating the above structure of the invasion, compression and its complications. Conclusion SSD images can clearly show the spatial relationship between lesions and peripancreatic structures, make up for the lack of axial images, and help to diagnose and guide the operation.