CAJ | 학술논문

背景：建立高质量的有限元模型是进行生物力学分析研究的重要基础，完整的青少年特发性脊柱侧凸三维有限元模型报道甚少。目的：建立PUMCⅡd1型青少年特发性脊柱侧凸三维有限元模型，为特发性脊柱侧凸的生物力学分析提供有效的数字化平台。方法：采集1例14岁PUMCⅡd1型特发性脊柱侧凸女性志愿者从T 1至骶尾骨的CT 断层图像，将CT数据导入Mimics 16.0医学三维重建软件中，建立包括胸廓结构的完整脊柱侧凸三维几何模型。再将几何模型以点云格式导入Geomagic Studio 11.0软件中，对三维模型进行光滑、打磨、去噪等一系列图像处理，生成特发性脊柱侧凸三维有限元模型。最后导入ANSYS 14.0有限元分析软件中添加韧带、设置单元类型和定义材料属性，生成完整的特发性脊柱侧凸三维有限元模型。结果与结论：成功建立了完整的PUMCⅡd1型特发性脊柱侧凸三维有限元模型，包括四面体单元522887个和杆单元730个，共计523617个单元，159008个节点。试验建立了外形逼真的PUMCⅡd1型特发性脊柱侧凸三维有限元模型，为进一步的生物力学分析提供了可靠的数字化模型。
배경：건립고질량적유한원모형시진행생물역학분석연구적중요기출，완정적청소년특발성척주측철삼유유한원모형보도심소。목적：건립PUMCⅡd1형청소년특발성척주측철삼유유한원모형，위특발성척주측철적생물역학분석제공유효적수자화평태。방법：채집1례14세PUMCⅡd1형특발성척주측철녀성지원자종T 1지저미골적CT 단층도상，장CT수거도입Mimics 16.0의학삼유중건연건중，건립포괄흉곽결구적완정척주측철삼유궤하모형。재장궤하모형이점운격식도입Geomagic Studio 11.0연건중，대삼유모형진행광활、타마、거조등일계렬도상처리，생성특발성척주측철삼유유한원모형。최후도입ANSYS 14.0유한원분석연건중첨가인대、설치단원류형화정의재료속성，생성완정적특발성척주측철삼유유한원모형。결과여결론：성공건립료완정적PUMCⅡd1형특발성척주측철삼유유한원모형，포괄사면체단원522887개화간단원730개，공계523617개단원，159008개절점。시험건립료외형핍진적PUMCⅡd1형특발성척주측철삼유유한원모형，위진일보적생물역학분석제공료가고적수자화모형。
BACKGROUND:Establishment of high-quality finite element model is an important basis of biomechanical analysis. The reports on three-dimensional finite element model of complete adolescent idiopathic scoliosis are less. OBJECTIVE:To set up three-dimensional finite element model of PUMCIId1 adolescent idiopathic scoliosis for building ideal digitization platform for further biomechanical study. METHODS:A 14-year-old female patient with PUMCIId1 adolescent idiopathic scoliosis was included as volunteer for the current study. CT images obtained from CT transverse scanning from T 1 to sacrococcyx were imported into Mimics 16.0 software to form qualified three-dimensional geometric model, including thoracic cage, which was further delivered to Geomagic Studio 11.0 software to build three-dimensional finite element model by a series of modules and optimization of cleaning. The geometric model was imported to ANSYS 14.0 software to build complete three-dimensional finite element adolescent idiopathic scoliosis model by adding ligaments, setting unit type, and defining material properties. RESULTS AND CONCLUSION:A complete three-dimensional finite element model of PUMCIId1 adolescent idiopathic scoliosis was built successful y, consisting of 522 887 tetrahedron elements and 730 rod elements, a total of 523 617 units and 159 008 nodes. Three-dimensional finite element model of PUMCIId1 adolescent idiopathic scoliosis was lifelike, and can be used as the reliable digital model for further biomechanical analysis.