Ultrasound elastography: Principles and techniques
TLDR
The principles of elastographic techniques are introduced and a technical summary for the main elastography techniques are given: from quasi-static methods that require a static compression of the tissue to dynamic methods that uses the propagation of mechanical waves in the body.Abstract:
Ultrasonography has been widely used for diagnosis since it was first introduced in clinical practice in the 1970's. Since then, new ultrasound modalities have been developed, such as Doppler imaging, which provides new information for diagnosis. Elastography was developed in the 1990's to map tissue stiffness, and reproduces/replaces the palpation performed by clinicians. In this paper, we introduce the principles of elastography and give a technical summary for the main elastography techniques: from quasi-static methods that require a static compression of the tissue to dynamic methods that uses the propagation of mechanical waves in the body. Several dynamic methods are discussed: vibro-acoustography, Acoustic Radiation Force Impulsion (ARFI), transient elastography, shear wave imaging, etc. This paper aims to help the reader at understanding the differences between the different methods of this promising imaging modality that may become a significant tool in medical imaging.read more
Citations
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Elastography for Muscle Biomechanics: Toward the Estimation of Individual Muscle Force.
TL;DR: This review presents a series of experiments that used ultrasound shear wave elastography to support the hypothesis that muscle stiffness is linearly related to both active and passive muscle forces.
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Transient elastography (FibroScan(®)) with controlled attenuation parameter in the assessment of liver steatosis and fibrosis in patients with nonalcoholic fatty liver disease - Where do we stand?
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References
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Elastography: A Quantitative Method for Imaging the Elasticity of Biological Tissues
TL;DR: Initial results of several phantom and excised animal tissue experiments are reported which demonstrate the ability of this technique to quantitatively image strain and elastic modulus distributions with good resolution, sensitivity and with diminished speckle.
Journal ArticleDOI
Transient elastography: a new noninvasive method for assessment of hepatic fibrosis
Laurent Sandrin,Bertrand Fourquet,Jean-Michel Hasquenoph,Sylvain Yon,Céline Fournier,F. Mal,Christos Christidis,Marianne Ziol,Bruno Poulet,Farad Kazemi,Michel Beaugrand,Robert Palau +11 more
TL;DR: Liver elasticity measurements were reproducible, operator-independent and well correlated and the intra- and interoperator reproducibility of the technique, as well as its ability to quantify liver fibrosis, were evaluated in 106 patients with chronic hepatitis C.
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Prospective Comparison of Transient Elastography, Fibrotest, APRI, and Liver Biopsy for the Assessment of Fibrosis in Chronic Hepatitis C
Laurent Castera,Julien Vergniol,Juliette Foucher,Brigitte Le Bail,E. Chanteloup,Maud Haaser,Monique Darriet,Patrice Couzigou,Victor de Ledinghen +8 more
TL;DR: FibroScan is a simple and effective method for assessing liver fibrosis, with similar performance to FibroTest and APRI, and could avoid a biopsy procedure in most patients with chronic hepatitis C.
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Shear wave elasticity imaging: a new ultrasonic technology of medical diagnostics
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