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兔肝门静脉阻断的MSCT血管成像评价

, PP. 35-37

Keywords: 肝血管,,体层摄影术,X线计算机,血管成像

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Abstract:

目的探讨MSCT的肝动脉与门静脉血管成像价值,评价MSCT血管成像(multi-sliceCTangiograph,MSCTA)在显示兔肝门静脉阻断效果中的作用。方法20只新西兰大白兔行门静脉左外支结扎,另20只仅行假手术对照。3周后行MSCTA检查,对每只实验兔的动脉期和门静脉期图像进行容积再现(volumerendering,VR)、最大密度投影(maximumintensityprojection,MIP)及多平面重建(multiplanarreformation,MPR)。并统计其肝动脉与门静脉的Ⅰ、Ⅱ级分支及≥Ⅲ级分支的显示情况,尤其是门静脉的阻断情况。结果肝左外叶门静脉分支结扎者均能被MSCTA检查证实。Ⅲ级以上肝动脉分支的MSCTA显示率(40%)明显低于Ⅰ、Ⅱ级肝动脉分支的显示(分别为100%和70%)(P<0.05)。对于门静脉分支的MSCTA显示方面,各级分支的显示率无显著性差异(P>0.05)。结论MSCTA可无创直观地显示兔肝动脉与门静脉的空间解剖细节,在兔肝门静脉阻断效果的评价中起着重要作用。

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