January 2019
Intermediate to advanced
616 pages
25h 14m
English
book
Ultrasound Elastography for Biomedical Applications and Medicine
by Ivan Z. Nenadic, Matthew W. Urban, James F. Greenleaf, Jean-Luc Gennisson, Miguel Bernal, Mickael Tanter
Content preview from Ultrasound Elastography for Biomedical Applications and Medicine
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26 Anisotropic Shear Wave Elastography
Sara Aristizabal
Well Living Lab, Rochester, MN, USA
26.1 Introduction
Shear wave elastography constitutes the principle behind a large range of techniques developed in the last two decades for noninvasive assessment of the mechanical properties of soft tissues such as the breast, skeletal muscle, liver, myocardium, prostate, and kidney, under normal and abnormal conditions [1–4]. The basic principle of most shear wave elastography techniques relies on the use of focused ultrasound to generate acoustic radiation force to vibrate the tissue and generate shear waves. The shear wave group velocity (
is then tracked as a function of time (
and distance (
). Under the assumption that the tissue is purely elastic, locally homogenous, and isotropic, the shear wave group velocity (
) can then be related to the shear modulus (
) and the underlying tissue stiffness can be estimated. Based on these principles, several acoustic radiation force‐based ...
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