[1]杨鹏,魏秋实,陈镇秋,等.基于多模态图像配准技术构建半骨盆全髋关节有限元模型[J].中医正骨,2017,29(05):1-6.
　YANG Peng,WEI Qiushi,CHEN Zhenqiu,et al.Construction of finite element models of hemipelvis and total hip joint using multi-modality image registration technique[J].The Journal of Traditional Chinese Orthopedics and Traumatology,2017,29(05):1-6.
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基于多模态图像配准技术构建半骨盆全髋关节有限元模型()
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《中医正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第29卷
期数:
2017年05期
页码:
1-6
栏目:
基础研究
出版日期:
2017-05-20

文章信息/Info

Title:
Construction of finite element models of hemipelvis and total hip joint using multi-modality image registration technique
作者:
杨鹏; 魏秋实; 陈镇秋; 王鼎; 陈达; 何伟; 张庆文
广州中医药大学第一附属医院,广东 广州 510405
Author(s):
YANG Peng; WEI Qiushi; CHEN Zhenqiu; WANG Ding; CHEN Da; HE Wei; ZHANG Qingwen
The First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine,Guangzhou 510405,Guangdong,China
关键词:
髋关节;  有限元分析;  图像配准
Keywords:
Key words hip joint;  finite element analysis;  image registration
摘要:
目的:基于多模态图像配准技术利用CT、MRI图像建立半骨盆全髋关节有限元模型。方法:采集1位健康女性志愿者同一体位下的CT和MRI图像,以DICOM格式保存。先采用Mimics16.0医学影像软件和Geomagic-Studio11逆向工程软件以CT数据建立髂骨、股骨骨性三维模型,再利用Solidworks软件将骨性三维模型与MRI图像进行配准融合,重建与之匹配的髋臼软骨和股骨头表面软骨三维模型,并在模型上标记髋关节周围韧带、肌肉附着点。将数据导入Abaqus6.14软件建立半骨盆全髋关节有限元模型,分析模拟双腿站立位单侧髋关节受力情况下(1.6倍体重,800 N)髋关节应力分布情况。结果:建立的半骨盆全髋关节三维有限元模型,包含髂骨和股骨近端的皮质骨、松质骨、关节软骨、韧带和肌肉共5部分三维子模型,涉及122 363个单元、216 149个节点。在800 N载荷下,髋关节应力大小和分布与以往研究结果相近。结论:基于多模态图像配准技术利用CT、MRI图像建立的半骨盆全髋关节有限元模型,能很好地模拟髋部骨骼、软骨的形态,并较为真实地反映髋关节的力学性能,具有一定的科研及临床价值。
Abstract:
ABSTRACT Objective:To build the finite element models of hemipelvis and total hip joint by using multi-modality image registration technique with CT and MRI images.Methods:The CT and MRI images of a healthy female volunteer were collected in the same body position and were saved in DICOM format.A osseous three-dimensional model of ilium and femur was built by using Mimics 16.0 medical image software and Geomagic-Studio 11 reverse engineering software and it was based on CT data.Then the osseous three-dimensional model image and MRI images were matched and fused by using Solidworks software to rebuild the matched three-dimensional model of acetabular cartilage and femoral head cartilage.The attachment points of ligaments and muscles around the hip joint were marked on the model.The Data were imported into the Abaqus 6.14 software and a finite element model of hemipelvis and total hip joint was obtained.The stress distribution of unilateral hip joint in analogic standing position(1.6 times of bodyweight,800 N)was analyzed.Results:The three-dimensional finite element model of hemipelvis and total hip joint consists of 5 three-dimensional submodels,including ilium and proximal femoral cortical bones,cancellous bones,articular cartilages,ligaments and muscles,and involved 122 363 units and 216 149 nodes.The stress value and stress distribution of hip joint at the load of 800 N were similar to previous research results.Conclusion:The finite element model of hemipelvis and total hip joint built by using multi-modality image registration technique with CT and MRI images can correctly simulate the morphology of hip bone and cartilage,and it can literally reflect the hip mechanical properties of hip joint,so it has some values in scientific research and clinic.

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更新日期/Last Update: 2017-05-20