腰椎间盘膨出节段数字模型及三维可视化  

Digital model and three-dimensional visualization of lumbar disk bulging segment

作　　者：李孝林[1] 任伯绪[1] 

机构地区：[1]长江大学医学院,湖北省荆州市434023

出　　处：《中国组织工程研究与临床康复》2011年第48期8939-8942,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：湖北省教育厅资助项目(D20101311);长江大学博士启动基金课题;课题名称:不同坐姿持续坐立对膨出椎间盘影响的有限元研究~~

摘　　要：背景:从生物力学入手研究腰椎间盘膨出意义重大。目的:探讨构建腰椎间盘膨出节段数字模型及三维可视化研究方法。方法:基于L3～4的16排螺旋CT连续断层114层二维图像,Mimics软件分别对腰椎骨性结构及各种软组织进行重建,并导入有限元分析软件进行模型验证。结果与结论:建立了L3～4间盘膨出节段三维数字模型,包括两个椎体、终板、纤维环、髓核及6种韧带,数字模型外形逼真,实体感强,可进行三维测量、复位、手术模拟以及输出用作CAD(计算机辅助设计),RP(快速成型)及FEA(有限元分析)研究。说明薄层CT,Mimics软件阈值分割、区域增长使数字模型的建立更为精确、快捷,数字模型可被输出用于进一步研究。BACKGROUND：The biomechanical study of lumbar disk bulging is significant.OBJECTIVE：To investigate the digital model and three-dimensional visualization of lumbar disk bulging segment.METHODS：Bone structure and various soft tissues of the lumbar spine were reconstructed by Mimics software based on 16-slice spiral CT continuous two-dimensional 114 images of L3-4 segments.The models were verified by introduced finite element analysis software.RESULTS AND CONCLUSION：The established three-dimensional digital model of lumbar disk bulding segment included two vertebral bodies,endplate,annulus fibrosus,nucleus pulposus and six types of ligaments.The digital model could be used for research of three-dimensional measurement,reduction,surgical simulation,output as computer aided design,rapid prototyping,and finite element analysis based on its natural appearance and strong entity.It is indicated that thin-layer CT and Mimics software ensure more accurate and rapid establishment of digital model in order to facilitate further research.

关 键 词：腰椎间盘膨出 CT图像 数字模型 可视化 阈值分割 

分 类 号：R318[医药卫生—生物医学工程]