摘要
目的从影像角度揭示构成活体肝后下腔静脉前间隙的肝静脉(HV)、下腔静脉(IVC)及右下肝静脉(IRHV)等血管的立体构成,为肝脏手术术前提供解剖学参考。方法对110例受检者于 CT 增强60～75 s 后行上腹部扫描,对 HV、IVC 及 IRHV 等行多平面重组(MPR)及三维立体最大密度投影(3D-MIP)成像。根据 HV 汇入 IVC 的方式进行分型,测量肝右静脉(RHV)与肝中静脉(MHV)或与共干的夹角、RHV 与 MHV 或与共干在 IVC 上的距离,观察 IRHV 的出现几率,并测量RHV 至 IRHV 的距离。结果在110例受检者中3支型(肝的3支静脉分别汇入 IVC)6例(5.45%),中、左支共干或合干型(肝中、左支静脉共干或合干后汇入 IVC)98例(89.10%),中、右支共干型(肝中、右支静脉共干后汇入 IVC)6例(5.45%)。RHV 与 MHV 或与共干的夹角为(55±18)°;RHV 与 MHV 或与共干在 IVC 上的距离为(21±7)mm。30例出现 IRHV,出现几率为27.27%;IRHV 至 RHV 的距离为(53±11)mm。结论利用 MPR 成像可准确地测量构成此间隙的各相关参数值,对指导手术有帮助。
Objective To study the three-dimensional topography of the hepatic vein （HV）, the inferior vena cava （IVC） and the inferior right hepatic vein（IRHV） in the retrohepatic and pre-IVC tunnel in human beings, and to provide an anatomic reference for liver surgery. Methods One hundred and ten volunteers underwent CT scanning at 60 to 75 s after injection of contrast medium, and their HV, IVC and IRHV were reconstructed into MPR and 3D-MIP images. The hepatic veins were grouped according to the way by which the hepatic vein enters IVC. The angle between the right hepatic vein and the middle hepatic vein or the trunk of hepatic vein was measured, and the width from right hepatic vein to middle hepatic vein or to the trunk of hepatic vein on IVC was recorded. The frequency of IRHV was observed, and the length of the tunnel was measured. Results Among the 110 volunteers, there were 6 cases（5.45%） with three hepatic veins respectively entering IVC, 98 cases（89. 10% ） with right hepatic vein and a common trunk of the middle hepatic vein and the left hepatic vein entering IVC , and 6 cases（5.45% ） with left hepatic vein and a common trunk of the right hepatic vein and the middle hepatic vein entering IVC. The mean value of the angles between the right hepatic vein and the middle hepatic vein or the trunk of hepatic vein was （55±18）°. The width from the right hepatic vein to the middle hepatic vein or to the trunk of hepatic vein was （21±7）mm. The IRHV was observed in 30 cases（ 27.27% ）. The mean value of the tunnel length was （ 53±11 ） ram. Conclusion The parameters of the retrohepatic and pre-IVC tunnel in human beings can be measured accurately by the imaging of MPR, which can provide an anatomic reference for the liver surgery.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2007年第7期709-712,共4页
Chinese Journal of Radiology
