正常人高分辨率CT中耳三维有限元建模方法  

Study on three-dimensional finite element reconstruction of healthy human middle ear by high-resolution CT

作　　者：陆钊群[1] 张官萍[1] 薛江红[3] 王春泉[2] 唐浩程[1] 

机构地区：[1]中山大学附属第六医院耳鼻咽喉一头颈外科,广东广州510655 [2]中山大学放射科,广东广州510655 [3]暨南大学力学与土木工程系,广东广州510632

出　　处：《生物医学工程与临床》2009年第3期198-201,共4页Biomedical Engineering and Clinical Medicine

基　　金：广州市科技局科技攻关计划科技攻关项目（2006Z3-E0311）

摘　　要：目的探索根据正常人颞骨高分辨率CT二维图像建立中耳三维有限元实体模型的方法。方法获得无中耳传音结构病变志愿者高分辨颞骨CT资料，使用Photoshop、Amira、HyperMesh及Abaqus软件根据二维CT图像建立中耳三维有限元实体模型。结果建立了包含鼓膜、听骨链的中耳三维有限元实体模型，模型几何尺寸在正常解剖数据范围内。结论探索出一种基于正常人颞骨高分辨率CT二维图像的中耳三维有限元实体建模方法，具有快捷、方便、廉价、无创性的优点，为进一步进行中耳声音传导机制有限元分析奠定了基础。Objective To establish the human middle ear three-dimensional finite element（FE） model using high-resolution CT in healthy Chinese. Methods Temporal bone imaging were performed in the subjects with normal hearing and without previous auricular disorders by high-resolution CT. All imagings were processed by Photoshop and Amira software for three-dimensional reconstruction. The HyperMesh software was applied to mesh the model and input the meshed model into FE analysis software to establish a three-dimensional FE model. Results A three-dimensional FE model of middle ear, which included tympanic membrane and ossicular bones was successfully established. The geometrical size of this model was within the normal range of anatomical data. Conclusion This study provides a rapid, practical, low-cost and non-invasive apporach of three-dimensional FE reconstruction of human middle ear with computer-assisted processes. It will lay the foundation for further study on FE analysis of human middle ear sound conduction mechanism.

关 键 词：中耳 颞骨高分辨率CT 三维有限元模型 

分 类 号：R322.92[医药卫生—人体解剖和组织胚胎学]