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Year : 2022  |  Volume : 11  |  Issue : 4  |  Page : 252-274

Ultrasound elastography

1 Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
2 Department of Ultrasound, The First People's Hospital of Yueyang, Yueyang, Hunan Province, China
3 Department of Internal Medicine, Hirslanden Clinic, Bern, Switzerland

Correspondence Address:
Christoph F Dietrich
Department Allgemeine Innere Medizin, Kliniken Hirslanden Beau Site, Salem und Permancence, Bern
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/EUS-D-21-00151

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Physicians have used palpation as a diagnostic examination to understand the elastic properties of pathology for a long time since they realized that tissue stiffness is closely related to its biological characteristics. US elastography provided new diagnostic information about elasticity comparing with the morphological feathers of traditional US, and thus expanded the scope of the application in clinic. US elastography is now widely used in the field of diagnosis and differential diagnosis of abnormality, evaluating the degree of fibrosis and assessment of treatment response for a range of diseases. The World Federation of Ultrasound Medicine and Biology divided elastographic techniques into strain elastography (SE), transient elastography and acoustic radiation force impulse (ARFI). The ARFI techniques can be further classified into point shear wave elastography (SWE), 2D SWE, and 3D SWE techniques. The SE measures the strain, while the shear wave-based techniques (including TE and ARFI techniques) measure the speed of shear waves in tissues. In this review, we discuss the various techniques separately based on their basic principles, clinical applications in various organs, and advantages and limitations and which might be most appropriate given that the majority of doctors have access to only one kind of machine.

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