摘要
目的建立漏斗胸患者前胸廓三维实体模型,进行生物力学有限元分析,为Nuss手术提供可参考的依据,并提出可行的手术方案。方法首先利用Mimics和Geomagic Studio软件的三维造型功能,构建出漏斗胸患者前胸廓三维模型,包括患者前胸廓数据采集,生成点云数据,构建前胸廓三维实体造型;然后利用有限元分析软件ANSYS建立三维有限元模型,共198964个单元,332216个节点,模拟Nuss手术过程,对模型进行生物力学分析。结果完整重现了漏斗胸患者前胸廓的复杂形态,建立了包括肋骨、胸骨体在内的鲜明、直观的漏斗胸患者前胸廓三维有限元模型。结论建立漏斗胸患者前胸廓三维实体模型,进行漏斗胸Nuss手术矫正过程的有限元分析将有助于提高医生Nuss手术矫形的质量。
Objective To establish three-dimensional solid model of thorax with pectus excavatum patient for biomechanical finite element analysis,for the purpose of providing a reference for Nuss surgical and making more viable options.Methods The three-dimensional modeling function of software Geomagic Studio and Mimics were used to establish the three-dimensional model of thorax with pectus excavatum patient,which included collection of thorax data,generation of point cloud data and establishment of three-dimensional thorax model.Then,the finite element model with 198 964 elements and 332 216 nodes was established.The Nuss procedure was simulated by finite element method with ANSYS.Results The integrated three-dimensional finite element model was reconstructed,and the model reproduced complicated morphology of thorax with pectus excavatum patient which included ribs and sternums.Conclusion It is demonstrated that the establishment of three-dimensional model of thorax with pectus excavatum patient and simulation of Nuss procedure by finite element method could be helpful for improving the quality of surgical correction in Nuss procedure.
出处
《生物医学工程与临床》
CAS
2011年第4期316-321,共6页
Biomedical Engineering and Clinical Medicine
基金
国家自然科学基金的资助(11072087
10832012)
关键词
漏斗胸
三维实体模型
有限元分析
生物力学分析
pectus excavatum
three-dimensional solid model
finite element analysis
biomechanical analysis
