摘要
目的探讨原发性肝癌门静脉癌栓(PVTT)多层螺旋CT血管成像(CTA)的影像特征及其诊断价值。方法对179例诊断为原发性肝癌的患者行多层螺旋CT扫描平扫和三期动态增强扫描,并行多平面重建(MPR)、最大密度投影(MIP)及容积再现(VRT)血管成像,选择其中合并PVTT的87例患者比较其横轴位图像及CTA图像在诊断中的差异。结果轴位及CTA显示门静脉主干一级分支及二级分支PVTT无显著差异(P>0.05),而二级以下分支PVTT显示有显著差异(P<0.05);CTA图像对于肿瘤供血动脉及侧支循环血管的显示较轴位图像立体、直观。结论多层螺旋CT动态增强扫描并血管重建,可提高较门静脉小分支的检出率,较好地多方位显示门静脉癌栓的位置、范围、程度及侧支血管,直接显示肿瘤与门静脉血管的关系。
Objective To discuss the value of multi-slice CT angiography （CTA）in daignosis of portal vein tumor thrombus （PVTr）in primary liver cancer patients. Methods 179 primary liver cancer cases diagnosed with multi-slice CT scan and plain three dynamic contrast-enhanced scan, parallel MPR, MIP and volume rendering （VRT）angiography, select the merger of PVTr compared with 87 patients with axial image and the CTA. Results Axial image and CTA showed that there were no dignifieant difference in portal vein trunk and branches of a second branch PVTr （P〉0.05）. There was dignificant difference in second branch of PVTT （P〈0.05）. Conclusion Dynamic contrast-enhanced mLdfi-slice CT scan and blood vessel reconstruction can improve the rate in detection of small branch and the location of the portal vein tumor thrombus, the scope and extent of collateral vessels can be diversified displayed in addition to directly show relationship betwee the tumor and the portal vein vessels.
出处
《中国热带医学》
CAS
2009年第2期298-299,301,共3页
China Tropical Medicine
关键词
CT血管造影术
原发性肝癌
门静脉
癌栓
CT angiography
Primary liver cancer
Portal vein tumor
, Thrombus of tumor
