尾状叶门静脉解剖结构研究

Observation of anatomical structures of portal vein in caudate lobe

[目的 ]利用经动脉性门静脉造影CT(CTAP)重建门静脉及肝静脉三维结构 ,观察生理状态下的尾状叶门静脉的分支形式 .[方法 ]使用regiongrowing法重建门静脉及肝静脉的三维结构 ,把门静脉0 1次分支分出 ,分布于Spigel叶以及下腔静脉周围肝实质的门静脉支为尾状叶的门静脉 ,以左、中、右肝静脉为界 ,将下腔静脉周围分成左肝静脉的左侧部分、左肝静脉的右侧部分、右肝静脉的左侧部分及右肝静脉的右侧部分 ,观察尾状叶的门静脉在下腔静脉周围肝实质内的分支形式 .[结果 ]下腔静脉周边的尾状叶门静脉支为每例 2～ 5支 ,平均 4支 ;下腔静脉周围尾状叶门静脉支的出现率为左肝静脉的左侧部分为 10 0 % ,左肝静脉的右侧部分为 32 % ,右肝静脉的左侧部分为 80 % ,右肝静脉的右侧部分为2 7% .[结论 ]下腔静脉周围存在尾状叶 。

OBJECTIVETo reconstruct the 3 dimension structures of portal vein and hepatic vein, the branch types of portal vein in caudate lobe were observed in physiological state by portal vein contrast CT via artery.?METHODS?3 D portal vein and hepatic vein were reconstructed by region growing method. Caudate lobe was around the inferior vena cava and was distinguished as LL(left lobe, left part), LR(left lobe, right part), RL(right lobe, left part) and RR(right lobe, right part) by left, middle and left hepatic veins. Branch type of the portal vein in the caudate lobe was observed.?RESULTS?The number of branches of portal vein in caudate lobe was 4 per person in average, ranged 2～5 branches per person. The branches of portal vein were observed 100% in LL, 32% in LR,80% in RL and 27% in RR.?CONCLUSION?Branch pattern of portal vein in caudate lobe around inferior vena cava in physiological status was ascertained.