中文摘要：

针对作者以前提出的基于有限元迭代的组织弹性模量重建即超声弹性成像逆问题求解的方法进行了进一步的研究。包括采用四边形单元代替三角形单元、尝试对组织边界的弹性模量不进行校正、考虑组织边界的弹性模量未知及含有随机噪声的情形。这些工作为组织弹性模量重建方法的实际应用奠定了基础。

英文摘要：

A further study was performed on the finite-element iteration-based method of tissue elastic modulus reconstruction, i. e. , the solution of the inverse problem of ultrasound elastography. The quadrilateral element is used instead of the triangular element used in the former study. The method with and without calibration of the elastic modulus of tissue boundary was compared. The condition with unknown elastic modulus of tissue boundary and that with random noises were considered in the paper. These studies laid the foundation for the practical applications of the tissue elasticity reconstruction method.