论文标题
回响弹性图，用于弹性表征各向异性组织的弹性表征
Reverberant Elastography for the Elastic Characterization of Anisotropic Tissues
论文作者
论文摘要
我们通过调整电磁理论中用于处理横向各向同性材料的框架，从而在各向异性弹性介质中得出了封闭形式的溶液。分析了不同的样品定点几何形状，强调了它们与光学相干弹性学（OCE）和超声弹性弹力图（使用）的相关性。在实际情况下，使用有限元素的数值模拟用于验证所提出的解决方案。 OCE实验是在离体鸡肉肌肉样品中进行的，以表征平面内和平面外剪切模量，假设横向各向同性弹性模型。此外，我们为各向同性培养基案例获得了广泛的几何学依赖性解决方案，从而统一了回响弹性学的先前结果。
We derive closed-form solutions for reverberant elastography in anisotropic elastic media by adapting the framework used in electromagnetic theory to treat transverse isotropic materials. Different sample-setup geometries are analyzed, highlighting their relevance for both optical coherence elastography (OCE) and ultrasound elastography (USE). Numerical simulations using finite elements are used to validate the proposed solutions in practical cases. OCE experiments are conducted in ex vivo chicken muscle samples for the characterization of in-plane and out-of-plane shear modulus assuming a transverse isotropic elastic model. Additionally, we obtained a generalized geometry-independent solution for the isotropic media case, thus unifying previous results for reverberant elastography.
