Conclusion The 3D reconstruction of multi-detectors CT could improve the detection of peripancreatic vessels.The vascular invasion was the most common reasons in unresectable pancreatic carcinoma.

• 结论多排CT三维重建有助于胰腺周围血管的显示，胰腺周围血管受侵是胰腺癌不能切除的主要原因。