肝脏管道供血分布及残肝体积的计算  

Hepatic Blood Flow Distribution and Remnant Liver Volume Estimation

作　　者：郭晓曦[1,2] 王博亮[1] 黄绍辉[1] 程明[1] 黄晓阳[1] 宋晓[3] 

机构地区：[1]厦门大学信息科学与技术学院,厦门361005 [2]集美大学计算机工程学院,厦门361021 [3]南阳师范学院计算机与信息技术学院,南阳473000

出　　处：《计算机辅助设计与图形学学报》2014年第5期794-799,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(61001144;61102137;61271336)

摘　　要：在肝切除、肝移植等手术计划中,精确地计算残肝体积至关重要,它能够直接影响到手术的成败.文中结合临床上肝外科手术的术式,提出了能够实时、准确地计算出基于肝脏管道供血分布的残肝体积的算法.首先基于个体化肝脏CT数据,通过分割和细化2个步骤建立肝实质三维模型及肝内管道的抽象树状模型;在此基础上,通过人机交互灵活地选定肝内管道分支数目和分支起点,并基于多背景距离变换计算肝脏供血分布和各部分所占比例,从而得到准确的残肝体积.实验结果表明,该算法计算速度快,对肝切除结果的模拟和计算精度能满足实际临床需求,可为手术计划提供指导依据.The precise estimation of remnant liver volume is extremely important in preoperative preparation for hepatobiliary surgeries such as hepatectomy and liver transplantation. According to the clinical liver surgical methods, an algorithm for remnant liver volume estimation based on hepatic blood flow distribution was proposed. First, a three-dimensional liver model and hepatic vessel tree were build after segmenting and thinning from individual liver CT images; then the algorithm provided flexible selections of vessel branch point and number by human-computer interaction to calculate hepatic blood flow distribution and proportion of each part based on multiple background distance transformation for remnant liver volume estimation. The experiment results indicate that this algorithm has strong real-time performance o[ resection simulation and accuracy to provide useful data for preoperative planning and it is acceptable for clinical applications.

关 键 词：管道树 管道分支 肝脏管道供血分布 残肝体积 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]