正常肝右后下静脉的多层螺旋CT血管造影研究

The Evaluation of Inferior Right Hepatic Vein with Multi-slice Spiral CT Angiography

目的评价多层螺旋CT血管造影(MSCTA)对肝右后下静脉(IRHV)的显示能力及其解剖特征。资料与方法对55例受检者肝静脉行MSCT增强扫描获得原始图像,用多平面重组(MPR)和最大密度投影(MIP)进行重组,观察IRHV特征。结果55例受检者的肝静脉图像中有15例出现IRHV,显示率为27.27%。IRHV至第二肝门的最小距离34.4mm,最大距离78.4mm,平均值(53.28±11.42)mm。IRHV管径与肝右静脉(RHV)管径存在互补的关系。结论MSCTA可以评价IRHV的解剖学特征。

Objective To evaluate the ability of multi - slice spiral CT angiography in identifying and demonstrating the anatomical features of inferior right hepatic vein （IRHV）. Materials and Methods 55 cases were examined with MSCT. Three-dimensional images of IRHV were processed at the workstation. Spatial anatomical characters of IRHV were obtained using MIP and MPR technique. Results Of all 55 cases, IRHV （15/55, 27.27% ） were clearly displayed by MIP imaging in 15 cases. The mean distance between the second hepatic portal and IRHV was （53.28 ± 11.42） mm. The diameter of IRHV and the right hepatic vein （RHV） had complementary relations. Conclusion Multi-slice spiral CT angiography could clearly visualize the anatomical features of IRHV.