摘要
目的通过研究在体肝脏的CT重建图像,确定肝脏左内侧叶IVa、IVb亚段间的分界及走行在两亚段之间的肝静脉属支。方法采用容积再现(volume rendering,VR)和最大密度投影(maximum intensity projection,MIP)两种方法,对49例在体肝脏CT扫描图像进行肝内血管的三维重建,寻找肝脏左内侧叶IVa、IVb两亚段间分界及走行在段间裂内的肝静脉属支及其汇入部位。结果在VR和NIP两种重建图像上,作为两亚段分界标志的肝静脉属支出现率分别为14.29%和87.75%,因此采用MIP法重建出的三维图像对于寻找肝内细小血管分支更适用。该支肝静脉属支的汇入部位可分为以下3种情况:①汇入肝中静脉主干有24例,占55.81%;②汇入肝中静脉左根有16例,占37.21%;③汇入肝左静脉有3例,占6.98%。结论通过CT三维重建图像可以确定肝脏IVa、IVb两亚段间分界,并且走行在该分界位置的肝静脉属支可作为两亚段间的分界标志,结果为临床上涉及肝脏左内侧叶IVa、IVb亚段的肝脏外科手术提供形态学依据。
Objective To study the boundary between hepatic subsegments IVa and Ivb and the tributary of hepatic vein in human.Methods The helical CT three-dimensional(3D) images of hepatic vessels in 49 adults were reconstructed by volume rendering(VR) and maximum intensity projection(MIP).Results The positive rates of the tributary of hepatic vein were 14.29%in VR images and 87.75%in MIP images respectively,MIP was a better reconstruction method compared with VR in observing the thinner hepatic vessels.There were thr...
出处
《解剖科学进展》
CAS
2010年第5期434-437,441,共5页
Progress of Anatomical Sciences
关键词
人肝脏
亚段
分界
CT
三维重建
human liver
subsegment
boundary
CT
three-dimensional reconstruction
