Optical coherence elastography based on the measurements of elastic wave speeds can quantify elastic moduli in the wave propagation directions and provide high-resolution elasticity maps for tissue. Here, we simultaneously visualized a longitudinal shear wave propagating along the depth and a Rayleigh wave propagating in the lateral direction, and analyzed the propagation characteristics of the elastic waves, including group speeds, frequency spectra, and frequency-dependent wave speeds. The analysis of the propagation characteristics demonstrates the reliability of the elasticity quantification by measuring different types of speeds of the elastic waves.

中文翻译：

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使用光学相干弹性成像表征用于测量弹性模量的瑞利波和纵横波传播

基于弹性波速度测量的光学相干弹性成像可以量化波传播方向的弹性模量，并为组织提供高分辨率的弹性图。在这里，我们同时可视化了沿深度传播的纵向横波和沿横向传播的瑞利波，并分析了弹性波的传播特性，包括群速度、频谱和频率相关波速。通过测量不同类型的弹性波速度，对传播特性的分析证明了弹性量化的可靠性。