Characterization of tissue mimicking phantoms and soft tissues using ultrasound shear wave elastography and power-law models

2020 ◽  
Vol 148 (4) ◽  
pp. 2598-2598
Author(s):  
Matthew W. Urban ◽  
Piotr Kijanka ◽  
Benjamin Wood ◽  
Robert J. McGough
Keyword(s):  
Shear Wave ◽  
Power Law ◽  
Soft Tissues ◽  
Shear Wave Elastography

scholarly journals Accuracy of shear wave elastography in characterization of thyroid nodules in children and adolescents

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Mohammed Hazem ◽  
Ossama M. Zakaria ◽  
Mohamed Yasser Ibrahim Daoud ◽  
Ibrahim Khalid Al Jabr ◽  
Abdulwahab A. AlYahya ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Shear Wave ◽  
Diagnostic Performance ◽  
Thyroid Nodules ◽  
Shear Wave Elastography ◽  
Invasive Technique ◽  
Predictive Values ◽  
Patients Âgés ◽  
Non Invasive

Abstract Background Thyroid nodules are an important health problem in children and adolescents. They possess a higher risk of malignancy in comparison to adults. This fact forms a great dilemma for clinicians. The aim of this study was to evaluate the reliability of shear wave elastography (SWE) as a non-invasive technique in the characterization of thyroid nodules in children and adolescents. Methods This prospective study included 56 patients with thyroid nodules. All the patients underwent clinical assessment, laboratory investigations, ultrasound, and Doppler examination, followed by an SWE assessment. Statistical analysis was performed and the best cut-off value to differentiate benign from malignant nodules was determined using the ROC curve and AUC. Results Seventy-two nodules were detected in the examined patients (ages ranged from 11 to 19 years, with mean age of 14.89 ± 2.3 years). Fifty-eight nodules (80.6%) were benign, and fourteen nodules (19.4%) were malignant (histopathologically proved). Highly suspicious criteria for prediction of malignancy by ultrasound and Doppler were hypoechoic echopattern, internal or internal and peripheral vascularity, microcalcifications, taller-than-wide dimensions, irregular outlines, and absence of halo (p < 0.05). The diagnostic performance for their summation was 70.69% sensitivity, 82.8% specificity, 80.45% accuracy, a 63.79% positive predictive value (PPV), and 87.9% negative predictive values (NPV). Regarding SWE, our results showed that 42.2 kPa was the best cut-off value, with AUC = 0.921 to differentiate malignant from benign nodules; the diagnostic performance was 85.71% sensitivity, 94.83% specificity, 93.06% accuracy, 76.9% PPV, and 93.2% NPV. Conclusion Shear wave elastography is a non-invasive technique that can assist in the diagnosis of malignant thyroid nodules among children and adolescents.

Characterization of the extensor digitorum communis tendon using high‐frequency ultrasound shear wave elastography

2020 ◽  
Vol 47 (4) ◽  
pp. 1609-1618
Author(s):  
Yan‐Yi Hsiao ◽  
Tai‐Hua Yang ◽  
Pei‐Yu Chen ◽  
Hsiu‐Yun Hsu ◽  
Li‐Chieh Kuo ◽  
...  
Keyword(s):  
Shear Wave ◽  
High Frequency ◽  
Shear Wave Elastography ◽  
Extensor Digitorum ◽  
Extensor Digitorum Communis ◽  
High Frequency Ultrasound ◽  
Frequency Ultrasound

scholarly journals Characterization of soft tissue tumours with ultrasound, shear wave elastography and MRI

2020 ◽  
Vol 49 (6) ◽  
pp. 869-881 ◽  
Author(s):  
N. Winn ◽  
J. Baldwin ◽  
V. Cassar-Pullicino ◽  
P. Cool ◽  
M. Ockendon ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Soft Tissue Tumours

Shear wave elastography for characterization of breast lesions: Shearlet transform and local binary pattern histogram techniques

2017 ◽  
Vol 91 ◽  
pp. 13-20 ◽  
Author(s):  
U. Rajendra Acharya ◽  
Wei Lin Ng ◽  
Kartini Rahmat ◽  
Vidya K. Sudarshan ◽  
Joel E.W. Koh ◽  
...  
Keyword(s):  
Shear Wave ◽  
Local Binary Pattern ◽  
Shear Wave Elastography ◽  
Breast Lesions ◽  
Shearlet Transform ◽  
Pattern Histogram

scholarly journals A Diagnostic Imaging Method – Shear Wave Elastography

2018 ◽  
Vol 1 (1) ◽  
pp. 14-22
Author(s):  
Marketa Zemanova
Keyword(s):  
Diagnostic Imaging ◽  
Shear Wave ◽  
Elastic Properties ◽  
Soft Tissues ◽  
Shear Wave Elastography ◽  
Biological Tissues ◽  
Utilization Rate ◽  
Quantitative Aspect ◽  
Imaging Method ◽  
Endocrine Orbitopathy

Shear Wave Elastography (SWE) is a non-invasive diagnostic imaging technique, that maps the elastic properties of tissues. Nowadays this modality develops increasingly in medicine across its disciplines and opens a new era of high-quality ultrasound examination because it increases the specificity and thus improves diagnostic assurance. This method is similar to manual palpation, shows elastic properties of biological tissues and provides a kind of reconstruction of the internal structure of soft tissues based on measurement of the response of tissue compression. Results: This method is already used routinely in the detection and diagnosis of breast cancer and thyroid cancer, prostate cancer, in hepatology, cardiology, view of the carotid arteries and lymphatic nodules. Standards of elasticity values for human tissues such as the mammary gland, liver, prostate or thyroid gland are progressively being created across the medical fields. Finally, the article examines its unquestioned benefit in ophthalmology. In ophthalmology, it already appears as an up-and-coming method in diagnostics and in evaluating the changes in oculomotor muscles and orbital tissues in patients with endocrine orbitopathy. Conclusion: Shear wave elastography offers three main innovations: the quantitative aspect, dimensional resolution, and real-time imaging ability. Determination of the utilization rate of this method and its inclusion into the diagnostics of endocrine orbitopathy is still a question and the subject of presently conducted clinical studies.

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