心脏二尖瓣动态追踪技术  

Elastic Registration Method to Compute Deformation Functions for Mitral Valve

作　　者：杨近妤 张婉[2] 殷然[2] 邓宇晓[2] 魏云峰[2] 曾俊义[2] 文通[2] 丁露[2] 刘小健[2] 李轶鹏[3] 

机构地区：[1]南昌市第三医院,南昌330009 [2]南昌大学第一附属医院,南昌330006 [3]江西省电力科学研究院,南昌330096

出　　处：《生物医学工程学杂志》2014年第5期1135-1138,共4页Journal of Biomedical Engineering

基　　金：国家自然科学基金资助课题(81201714)

摘　　要：二尖瓣疾病是最多发的心脏瓣膜疾病之一。瓣膜结构的精确定位和显示是二尖瓣微创手术的前提。本文提出了一种针对三维超声图像的多解析度弹性匹配方法来计算运动场函数,运动场函数通过三次B样条函数构造得到,而待优化的目标函数通过基于超声斑点噪声的最大似然方法获得。该算法被应用于匹配三维超声图像中的二尖瓣结构体素点。计算结果充分证明了算法的有效性。Mitral valve disease is one of the most popular heart valve diseases. Precise positioning and displaying of the valve characteristics is necessary for the minimally invasive mitral valve repairing procedures. This paper presents a multi-resolution elastic registration method to compute the deformation functions constructed from cubic B-splines in three dimensional ultrasound images, in which the objective functional to be optimized was generated by maximum likelihood method based on the probabilistic distribution of the ultrasound speckle noise. The algorithm was then ap- plied to register the mitral valve voxels. Numerical results proved the effectiveness of the algorithm.

关 键 词：二尖瓣 超声图像 弹性匹配 

分 类 号：R319[医药卫生—基础医学]