The advent of high–frame rate imaging in ultrasound allowed the development of shear wave elastography as a noninvasive alternative for myocardial stiffness assessment. It measures mechanical waves propagating along the cardiac wall with speeds that are related to stiffness. The use of cardiac shear wave elastography in clinical studies is increasing, but a proper understanding of the different factors that affect wave propagation is required to correctly interpret results because of the heart’s thin-walled geometry and intricate material properties. The aims of this review are to give an overview of the general concepts in cardiac shear wave elastography and to discuss in depth the effects of age, hemodynamic loading, cardiac morphology, fiber architecture, contractility, viscoelasticity, and system-dependent factors on the measurements, with a focus on clinical application. It also describes how these factors should be considered during acquisition, analysis, and reporting to ensure an accurate, robust, and reproducible measurement of the shear wave.

中文翻译：

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超声剪切波弹性成像在心脏病学中的应用

超声中高帧率成像的出现使得剪切波弹性成像成为心肌硬度评估的无创替代方案。它测量沿心壁传播的机械波，其速度与硬度相关。心脏剪切波弹性成像在临床研究中的使用越来越多，但由于心脏的薄壁几何形状和复杂的材料特性，需要正确理解影响波传播的不同因素才能正确解释结果。本综述的目的是概述心脏剪切波弹性成像的一般概念，并深入讨论年龄、血流动力学负荷、心脏形态、纤维结构、收缩性、粘弹性和系统相关因素对测量的影响，注重临床应用。它还描述了在采集、分析和报告过程中应如何考虑这些因素，以确保剪切波的准确、稳健和可重复的测量。