中国医疗设备2017，Vol.32Issue(6)：61-65,5.DOI:10.3969/j.issn.1674-1633.2017.06.016
基于零相位与光流法的混合超声弹性成像算法的研究
Research on Hybrid Ultrasonic Elastography Algorithm Based on Zero Phase and Optical Flow
摘要
Abstract
In view of the problem that the traditional time-domain cross-correlation algorithm of ultrasound elastography in estimating tissue displacement compute-intensive and inefficient, this paper proposed a hybrid method of ultrasound elastography based on phase zero estimation and optical flow method. Firstly, the zero phase was used to estimation method to obtain coarse displacement field, as a result of the initial displacement for optical flow; then the classical optical flow method Horn & Schunck (HS) optical flow method was used to correct for the displacement field; finally the least squares method was used to calculate the displacement field obtained axial strain organizations. In this paper, the simulation data algorithm was validated and the impact of simulation data under different compression on the experimental results was discussed. The experimental results showed that the longitudinal displacement diagram and the longitudinal strain map of the zero-phase and the optical flow method proposed in this paper were consistent with the finite element results, and the correctness of the algorithm was proved.关键词
超声弹性成像/光流法/零相位迭代/去相关/最小二乘法Key words
ultrasound elastography/optical flow/phase zero estimation/decorrelation/least squares method分类
医药卫生引用本文复制引用
李元瑞,张勇德..基于零相位与光流法的混合超声弹性成像算法的研究[J].中国医疗设备,2017,32(6):61-65,5.基金项目
省级科技项目"基于相关相位和光流法的二维实时超声弹性成像方法研究"(L2012294). （L2012294）
