Shear-Wave Elastography: Basic Physics and Musculoskeletal Applications
AuthorTaljanovic, Mihra S
Gimber, Lana H
Becker, Giles W
Latt, L Daniel
Klauser, Andrea S
Melville, David M
Witte, Russell S
AffiliationUniv Arizona, Coll Med, Dept Med Imaging
Univ Arizona, Coll Med, Dept Orthopaed Surg
Univ Arizona, Coll Opt Sci
MetadataShow full item record
PublisherRADIOLOGICAL SOC NORTH AMERICA
CitationTaljanovic, M. S., Gimber, L. H., Becker, G. W., Latt, L. D., Klauser, A. S., Melville, D. M., ... & Witte, R. S. (2017). Shear-wave elastography: basic physics and musculoskeletal applications. Radiographics, 37(3), 855-870.
Rights© RSNA, 2017
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractIn the past 2 decades, sonoelastography has been progressively used as a tool to help evaluate soft-tissue elasticity and add to information obtained with conventional gray-scale and Doppler ultrasonographic techniques. Recently introduced on clinical scanners, shear-wave elastography (SWE) is considered to be more objective, quantitative, and reproducible than compression sonoelastography with increasing applications to the musculoskeletal system. SWE uses an acoustic radiation force pulse sequence to generate shear waves, which propagate perpendicular to the ultrasound beam, causing transient displacements. The distribution of shear-wave velocities at each pixel is directly related to the shear modulus, an absolute measure of the tissue's elastic properties. Shear-wave images are automatically coregistered with standard B-mode images to provide quantitative color elastograms with anatomic specificity. Shear waves propagate faster through stiffer contracted tissue, as well as along the long axis of tendon and muscle. SWE has a promising role in determining the severity of disease and treatment follow-up of various musculoskeletal tissues including tendons, muscles, nerves, and ligaments. This article describes the basic ultrasound physics of SWE and its applications in the evaluation of various traumatic and pathologic conditions of the musculoskeletal system.
Note6 month embargo; published online: May 11 2017
VersionFinal published version
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