中文摘要：

肝脏管道的分级是肝脏管道分支类型判定、管道变异情况分析的重要步骤,是针对性地制定个性化手术方案,从而降低肝切除手术风险的前提．基于ITK（insight segmentation and registration toolkit）和VTK（visualization toolkit）设计了一种肝脏管道自动分级的算法,实现了肝脏CT序列的管道自动提取、管道细化、管道拓扑建模以及管道分级的功能,最后用不同的颜色将不同级别的管道进行三维显示,便于医生更直观地对肝脏的管道系统的形态及结构进行分析,为制定术前手术计划提供帮助．

英文摘要：

The hepatic vessel classification is an important step in the process of the hepatic vessel branch type determination,and vessel variation analysis.It is also the premise of targeting to develop a personalized surgery program with reducing the risk of hepatic resection.In this paper,an automatic hepatic vessel classification algorithm using insight segmentation and registration toolkit（ITK） and visualization toolkit（VTK） is introduced.The algorithm implements the liver CT sequence of vessel automatic extraction,vessel thinning,vessel topology modeling,vessel classification,and the different levels of vessel coloring display in 3D aiming at facilitating the doctor much intuitively with hepatic duct system form and structure analysis to make the preoperative operation plan.