64层螺旋CT门静脉重建技术在肝癌合并癌栓的诊断价值

Diagnostic value of liver carcinoma with portal vein thrombosis by 64-slice spiral CT portal vein image reconstruction technique

目的探讨多层螺旋CT(MSCT)肝多期扫描后门静脉重建技术在肝癌合并癌栓中的诊断价值。方法回顾分析60例肝癌合并癌栓MSCT门静脉重建的表现,重建技术有多平面重建(MPR)、最大密度投影(MIP)和容积再现(VR)。结果CT血管重建技术MIP及各种角度及厚度的VR,同时同层多期对比观察,能清楚显示门脉主干的瘤栓、邻近肿瘤对门脉的侵犯和门脉的侧支血管;MPR较直观显示癌栓整体形态、范围及管腔变窄程度。结论MSCT肝增强扫描后门静脉重建技术是显示肝癌合并癌栓的有效诊断方法。

Objective To evaluate the value of portal vein image reconstruction technique in diagnosis of liver carcinoma with portal vein thrombosis using multi-slice CT after multi-phase enhancement. Methods Sixty cases of liver carcinoma with thrombosis under went portal vein image reconstruction with 64-slice spiral CT, including muhiplanar reconstruction（ MPR）, maximum intensity of projection（MIP） and volume rendering（VR）. Results The ereeonstruetion technique of MIP,VR did simultaneous multl-phase contrast observation on identical slices, and clearly showed thrombosis in the main portal vein, the portal invation by adjacent tumor and portal branches vessles;MPR directly showed the whole shape,the extent and lumen narrowing caused by carcinoma thrombosis. Conclusion The portal vein image reconstruction technique is an effect diagnostic method for liver carcinoma with portal vein thrombosis.