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AJR Am J Roentgenol. 2015 Jul;205(1):22-32. doi: 10.2214/AJR.15.14552. Epub 2015 Apr 23.

Ultrasound Elastography and MR Elastography for Assessing Liver Fibrosis: Part 1, Principles and Techniques.

Author information

1
1 Department of Radiology, Centre Hospitalier de l'Université de Montréal, Montréal, QC, Canada.
2
2 Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montréal, QC, Canada.
3
3 Department of Radiology, Radio-Oncology and Nuclear Medicine, Université de Montréal, Montréal, QC, Canada.
4
4 Institute of Biomedical Engineering, Université de Montréal, Montréal, QC, Canada.
5
5 Laboratory of Biorheology and Medical Ultrasonics, Centre hospitalier de l'Université de Montréal, Montréal, QC, Canada.
6
6 Liver Imaging Group, Department of Radiology, University of California San Diego, 408 Dickinson St, San Diego, CA 92103-8226.

Abstract

OBJECTIVE:

The purpose of this article is to provide an overview of ultrasound and MR elastography, including a glossary of relevant terminology, a classification of elastography techniques, and a discussion of their respective strengths and limitations.

CONCLUSION:

Elastography is an emerging technique for the noninvasive assessment of mechanical tissue properties. These techniques report metrics related to tissue stiffness, such as shear-wave speed, magnitude of the complex shear modulus, and the Young modulus.

KEYWORDS:

MR elastography (MRE); MRI; elasticity; elastography; liver fibrosis; shear stiffness; shear wave; ultrasound; viscoelasticity; viscosity

PMID:
25905647
PMCID:
PMC4819982
DOI:
10.2214/AJR.15.14552
[Indexed for MEDLINE]
Free PMC Article

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