Shear-Wave Elastography in Carotid Plaques: Comparison with Grayscale Median and Histological Assessment in an Interesting Case

2013 ◽  
Vol 35 (01) ◽  
pp. 3-4 ◽  
Author(s):  
J. W. Garrard ◽  
K. V. Ramnarine
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Interesting Case ◽  
Histological Assessment ◽  
Carotid Plaques

scholarly journals Ultrasound Elastography: another piece in the puzzle of carotid plaque vulnerability?

2021 ◽  
Author(s):  
Andjoli Davidhi ◽  
Vasileios Rafailidis ◽  
Evangelos Destanis ◽  
Panos Prassopoulos ◽  
Stefanos Foinitsis
Keyword(s):  
Shear Wave ◽  
Carotid Plaque ◽  
Diagnostic Yield ◽  
Imaging Modality ◽  
Shear Wave Elastography ◽  
Ultrasound Elastography ◽  
Intraplaque Hemorrhage ◽  
Plaque Vulnerability ◽  
Carotid Plaques ◽  
Increased Risk

Recent literature has shown that various carotid plaque features, other than stenosis, contribute to plaque vulnerability. Features such as surface morphology and plaque composition with distinct components (e.g. intraplaque hemorrhage, lipid core) have been associated with the increased risk of future cerebrovascular events. Ultrasonography constitutes the first line modality for the assessment of carotid disease and has traditionally been used to grade stenosis with high accuracy. Recenttechnological advances such as contrast-enhanced ultrasound and elastography increased the diagnostic yield of ultrasound in assessing the morphology of carotid plaques. The purpose of this review is to present the available literature on ultrasound elastography of the atherosclerotic carotid. Strain and shear wave elastography allow for the characterization of plaque components, thus indicating its nature and importantly, the plaque’s vulnerability. Shear wave elastography indices appear morerobust than Strain indices. Overall, elastography is a feasible method to distinguish vulnerable carotid plaques. There is, however, a need for larger and longer prospective controlled clinical studies in order to validate elastography as an imaging modality used for the detection of unstable carotid plaques.

scholarly journals Combined spatiotemporal and frequency-dependent shear wave elastography enables detection of vulnerable carotid plaques as validated by MRI

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
David Marlevi ◽  
Sharon L. Mulvagh ◽  
Runqing Huang ◽  
J. Kevin DeMarco ◽  
Hideki Ota ◽  
...  
Keyword(s):  
Phase Velocity ◽  
Group Velocity ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Intraplaque Hemorrhage ◽  
Frequency Dependent ◽  
Invasive Approach ◽  
Carotid Plaques ◽  
Phase Velocities ◽  
Luminal Narrowing

AbstractFatal cerebrovascular events are often caused by rupture of atherosclerotic plaques. However, rupture-prone plaques are often distinguished by their internal composition rather than degree of luminal narrowing, and conventional imaging techniques might thus fail to detect such culprit lesions. In this feasibility study, we investigate the potential of ultrasound shear wave elastography (SWE) to detect vulnerable carotid plaques, evaluating group velocity and frequency-dependent phase velocities as novel biomarkers for plaque vulnerability. In total, 27 carotid plaques from 20 patients were scanned by ultrasound SWE and magnetic resonance imaging (MRI). SWE output was quantified as group velocity and frequency-dependent phase velocities, respectively, with results correlated to intraplaque constituents identified by MRI. Overall, vulnerable lesions graded as American Heart Association (AHA) type VI showed significantly higher group and phase velocity compared to any other AHA type. A selection of correlations with intraplaque components could also be identified with group and phase velocity (lipid-rich necrotic core content, fibrous cap structure, intraplaque hemorrhage), complementing the clinical lesion classification. In conclusion, we demonstrate the ability to detect vulnerable carotid plaques using combined SWE, with group velocity and frequency-dependent phase velocity providing potentially complementary information on plaque characteristics. With such, the method represents a promising non-invasive approach for refined atherosclerotic risk prediction.

scholarly journals Shear wave elastography imaging of carotid plaques: feasible, reproducible and of clinical potential

2014 ◽  
Vol 12 (1) ◽  
Author(s):  
Kumar V Ramnarine ◽  
James W Garrard ◽  
Baris Kanber ◽  
Sarah Nduwayo ◽  
Timothy C Hartshorne ◽  
...  
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Carotid Plaques ◽  
Clinical Potential

scholarly journals Author Correction: Combined spatiotemporal and frequency-dependent shear wave elastography enables detection of vulnerable carotid plaques as validated by MRI

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
David Marlevi ◽  
Sharon L. Mulvagh ◽  
Runqing Huang ◽  
J. Kevin DeMarco ◽  
Hideki Ota ◽  
...  
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Frequency Dependent ◽  
Carotid Plaques

Shear Wave Elastography Imaging for the Features of Symptomatic Carotid Plaques: A Feasibility Study

2017 ◽  
Vol 36 (6) ◽  
pp. 1213-1223 ◽  
Author(s):  
Zhe Lou ◽  
Jun Yang ◽  
Li Tang ◽  
Youhe Jin ◽  
Jinsong Zhang ◽  
...  
Keyword(s):  
Shear Wave ◽  
Feasibility Study ◽  
Shear Wave Elastography ◽  
Carotid Plaques ◽  
Symptomatic Carotid

Liver Elastography in Healthy Children Using Three Different Systems – How Many Measurements Are Necessary?

2020 ◽  
Author(s):  
Anders Batman Mjelle ◽  
Anesa Mulabecirovic ◽  
Roald Flesland Havre ◽  
Edda Jonina Olafsdottir ◽  
Odd Helge Gilja ◽  
...  
Keyword(s):  
Shear Wave ◽  
Transient Elastography ◽  
Intraclass Correlation ◽  
Age Groups ◽  
Liver Stiffness ◽  
Shear Wave Elastography ◽  
Healthy Children ◽  
Significant Difference ◽  
Pediatric Liver Disease ◽  
Liver Elastography

Abstract Purpose Liver elastography is increasingly being applied in screening for and follow-up of pediatric liver disease, and has been shown to correlate well with fibrosis staging through liver biopsy. Because time is of the essence when examining children, we wanted to evaluate if a reliable result can be achieved with fewer acquisitions. Materials and Methods 243 healthy children aged 4–17 years were examined after three hours of fasting. Participants were divided into four age groups: 4–7 years; 8–11 years; 12–14 years and 15–17 years. Both two-dimensional shear wave elastography (2D-SWE; GE Logiq E9) and point shear wave elastography (pSWE; Samsung RS80A with Prestige) were performed in all participants, while transient elastography (TE, Fibroscan) was performed in a subset of 87 children aged 8–17 years. Median liver stiffness measurement (LSM) values of 3, 4, 5, 6, 7, and 8 acquisitions were compared with the median value of 10 acquisitions (reference standard). Comparison was performed for all participants together as well as within every specific age group. We investigated both the intraclass correlation coefficient (ICC) with absolute agreement and all outliers more than 10 %, 20 % or ≥ 0.5 or 1.0 kPa from the median of 10 acquisitions. Results For all three systems there was no significant difference between three and ten acquisitions, with ICCs ≥ 0.97. All systems needed 4 acquisitions to achieve no LSM deviating ≥ 1.0 kPa of a median of ten. To achieve no LSM deviating ≥ 20 % of a median of ten acquisitions, pSWE and TE needed 4 acquisitions, while 2D-SWE required 6 acquisitions. Conclusion Our results contradict recommendations of 10 acquisitions for pSWE and TE and only 3 for 2D-SWE.

The novel point shear-wave elastography method ElastPQ® is accurate for non-invasive evaluation of liver fibrosis and portal hypertension

2017 ◽  
Vol 55 (05) ◽  
pp. e28-e56
Author(s):  
TA Bucsics ◽  
B Grasl ◽  
P Schwabl ◽  
M Mandorfer ◽  
J Dmitrieva ◽  
...  
Keyword(s):  
Portal Hypertension ◽  
Liver Fibrosis ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
The Novel ◽  
Non Invasive ◽  
Invasive Evaluation

Value of Hitachi Shear Wave Elastography for non-invasive evaluation of liver fibrosis and complication of cirrhosis

2019 ◽  
Author(s):  
C Urak ◽  
S Bota ◽  
M Razpotnik ◽  
F Hucke ◽  
S Megymorecz ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Non Invasive ◽  
Invasive Evaluation

Diagnotic value of Shear Wave Elastography in differentiating parathyroid adenomas from thyroid nodules

2019 ◽  
Author(s):  
Mihaela Vlad ◽  
Ioana Golu ◽  
Maria Oprea ◽  
Daniela Amzar ◽  
Melania Balas ◽  
...  
Keyword(s):  
Shear Wave ◽  
Thyroid Nodules ◽  
Shear Wave Elastography ◽  
Parathyroid Adenomas
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