Limitations and artifacts in shear-wave elastography of the liver
Biomedical Engineering Letters
;
(4): 81-89, 2017.
Article
in English
| WPRIM
| ID: wpr-655917
ABSTRACT
Recent studies have shown that real-time, two-dimensional shear-wave elastography (2D-SWE) can monitor liver fibrosis by measuring tissue elasticity (i.e., elastic modulus). Two clinical studies of 2D-SWE in the liver have shown that there are several practical issues that can compromise quantitation of liver tissue elasticity. Both general ultrasound (US) limitations and limitations in the 2D-SWE method itself resulted in significant variability in estimated liver elasticity. The most common US limitations were poor acoustic window, limited penetration, and rib/lung shadows. The most common 2D-SWE limitations were reverberations under the liver capsule, respiratory/cardiac motion, and vessel pulsation/loss of SWE signal. Based on these studies, scan protocols have been optimized to minimize the influence of these limitations on liver elasticity quantification. These refined protocols should move non-invasive SWE closer to becoming the preferred tool to diagnose and manage many chronic diseases of the liver.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Acoustics
/
Fibrosis
/
Chronic Disease
/
Ultrasonography
/
Artifacts
/
Elasticity
/
Elasticity Imaging Techniques
/
Liver
/
Liver Cirrhosis
/
Methods
Type of study:
Diagnostic study
/
Practice guideline
Language:
English
Journal:
Biomedical Engineering Letters
Year:
2017
Type:
Article
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