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336 results for “elastography”
Data from "Fast acquisition of propagating waves in humans with low-field MRI: towards accessible MR elastography"
<p>Data presented in the Science Advances manuscript "<em>Fast acquisition of propagating waves in humans with low-field MRI: towards accessible MR elastography</em>" by Yushchenko M., Sarracanie M., Salameh N.</p> <p>See further details in <em>Description.txt.</em></p> <p>The 3D wave datasets acquired in humans at 0.1 T can be used for elastogram reconstruction with appropriate methods.<br> <br> </p>
Ultrasound Elastography to Predict Development of SOS
ClinicalTrials.gov study NCT03858530. IPD Sharing: NO. Countries: 1. Publications: 23.
Shear Wave Elastography in Native Kidney Disease
ClinicalTrials.gov study NCT02830438. IPD Sharing: NO. Countries: 1. Publications: 3.
Normal Liver Stiffness by MR Elastography
ClinicalTrials.gov study NCT03235414. IPD Sharing: NO. Countries: 1. Publications: 1.
Beyond Confounders: Addressing Source of Measurement Variability and Error in Shear Wave Elastography
ClinicalTrials.gov study NCT03342560. IPD Sharing: NO. Countries: 1. Publications: 30.
Diagnostic Accuracy of Shear-Wave Elastography for the Preoperative Risk Stratification of Follicular Lesions of the Thyroid
ClinicalTrials.gov study NCT03106337. IPD Sharing: NO. Countries: 1. Publications: 1.
A Study to Evaluate Liver Stiffness With Shear Wave Elastography
ClinicalTrials.gov study NCT05097963. IPD Sharing: NO. Countries: 1. Publications: 1.
Using Ultrasound Elastography to Predict Development of SOS
ClinicalTrials.gov study NCT02483481. IPD Sharing: Not stated. Countries: 1. Publications: 20.
Ultrasound Elastography of Breast Lesions
ClinicalTrials.gov study NCT00716482. IPD Sharing: Not stated. Countries: 5. Publications: 2.
Strain-elastography in Endometrial Cancer
ClinicalTrials.gov study NCT06623916. IPD Sharing: NO. Countries: 1. Publications: 1.
Database for Study: Shear-wave elastography for assessment of trapezius muscle stiffness: reliability and association with low-level muscle activity
<p>This is the database for the study entitled <strong>Shear-wave elastography for assessment of trapezius muscle stiffness: reliability and association with low-level muscle activity. </strong>In this study, we explored the reliability of shear-wave elastography for assessment of the trapezius muscle stiffness and its relationship with low-level muscle activity.Twenty participants were included in a two-session experiment. Measurements of shear modulus and muscle activity were performed at rest and during low-level activity, induced by shoulder abduction without additional external resistance. Good to excellent intra-session repeatability (ICC > 0.80) and moderate inter-rater and inter-session reproducibility (ICC = 0.66-0.74) were observed. Typical errors were acceptable only for intra-session measurements in resting conditions. Inverse relationships between shear modulus and muscle activity at 40° and 60° of shoulder abduction (r = -0.53 and -0.57) were observed on a group level. We also found lower shear modulus in females, for perpendicular probe position and for the non-dominant side of the body. Previous studies have demonstrated positive within-individual relationships between muscle activity and shear modulus. Our results suggested that, at least when the activity levels are low, an inverse relationship exists between muscle activity and shear modulus on a group level, suggesting inherent passive stiffness could account for a larger portion of the variance (compared to muscle activity) in shear modulus when the muscle activity is low. Our results imply that shear-wave elastography can be used in research exploring muscle stiffness, however, caution is needed since only intra-session examination in resting conditions showed acceptable within-participant typical errors.</p>
Data from: Utility of real-time shear wave elastography in the assessment of testicular torsion
Real-time shear-wave elastography (SWE) is a newly developed method which can obtain the stiffness of tissues and organs based on tracking of shear wave propagation through a structure. Several studies have demonstrated its potential in the differentiation between diseased and normal tissue in clinical practices, however the applicability to testicular disease has not been well elucidated. We investigated the feasibility and reproducibility of SWE in the detection of testicular torsion. This prospective study comprised 15 patients with complete testicular torsion. Results obtained from SWE along with conventional gray-scale and color Doppler sonography and post-operative pathology were compared. The results revealed that (i) the size of injured testis was increased and the twisted testis parenchyma was heterogeneous. The blood flow signals in injured testis were barely visible or absent; (ii) The Young's modulus, including Emean, Emax, Emin and SD values in the border area of torsional testis were higher than those of normal testis (Emean, 78.07±9.01kPa vs 22.0±5.10kPa; Emax,94.07±6.53kPa vs 27.87±5.78kPa; Emin, 60.73±7.84 kPa vs 18.90±4.39kPa; SD, 7.67±0.60 kPa vs 2.30±0.36 kPa, [P<0.05]); The Emax and SD values in the central area of the torsional testis were higher than the corresponding area of the normal testis (Emax, 8.23±0.30 kPa vs 3.97±0.95kPa; SD, 1.5±0.26kPa vs 0.67±0.35kPa,[P<0.05]) and Emin values was lower than those of normal testicles(0.93±0.51kPa vs 1.6±0.36kPa; [P<0.05]); (iii) The Young's modulus measurement between two physicians showed good agreement. The pathological findings were accordance with SWE measurement. SWE is a non-invasive, convenient and high reproducible method and may serve as an important alternative tool in the diagnosis and monitoring the progression of the acute scrotums, in additional to conventional Doppler sonography.
Data from: Is strain elastography (IO-SE) sufficient for characterization of liver lesions before surgical resection - or is contrast enhanced ultrasound (CEUS) necessary?
Aim: To evaluate the diagnostic accuracy of IO-SE in comparison to IO-CEUS for the differentiation between malignant and benign liver lesions. Material and Methods: In a retrospective diagnostic study IO-CEUS and SE examinations of 49 liver lesions were evaluated and compared to histopathological examinations. Ultrasound was performed using a multifrequency linear probe (6–9 MHz). The loops of CEUS were evaluated up to 5 min. The qualitative characterization of IO-SE was based on a color coding system (blue = hard, red = soft). Stiffness of all lesions was quantified by a specific scaling of 0–6 (0 = low, 6 = high) using 7 ROIs (2 central, 5 peripheral). Results: All malignant lesions displayed a characteristic portal venous washout and could be diagnosed correctly by IO-CEUS. 3/5 benign lesions could not be characterized properly either by IO-CEUS or IO-SE prior to resection. Thus for IO-CEUS sensitivity, specificity, positive and negative predictive value and accuracy were 100%, 40%, 94%, 100% and 94%. Lesion sizes were between 8 and 59 mm in diameter. Regarding the IO-SE, malignant lesions showed a marked variability. In qualitative analysis, 31 of the malignant lesions were blue colored denoting overall induration. Thirteen malignant lesions showed an inhomogenous color pattern with partial indurations. Two of the benign lesions also displayed overall induration. The other benign lesions showed an inhomogenous color mapping. Calculated sensitivity of the SE was 70.5%, specificity 60%, PPV 94%, NPV 18.75%, and accuracy 69%. Conclusion: IO-CEUS is useful for localization and characterization of liver lesions prior to surgical resection whereas IO-SE provided correct characterization only for a limited number of lesions.
Magnetic Resonance Elastography as a Method to Estimate Stiffness of Soft Tissues
ClinicalTrials.gov study NCT01757730. IPD Sharing: Not stated. Countries: 1. Publications: 5.
ShearWave™ Elastography of Breast Lesions in Chinese Patients
ClinicalTrials.gov study NCT02226081. IPD Sharing: Not stated. Countries: 1. Publications: 1.
ShearWave™ Elastography to Assess Liver Fibrosis in Chinese Patients With Hepatitis B
ClinicalTrials.gov study NCT02313649. IPD Sharing: Not stated. Countries: 1. Publications: 1.
The Accurateness of Endoscopic Ultrasound Elastography in the Guidance of EUS-FNA in Solid Pancreatic Lesions
ClinicalTrials.gov study NCT04148755. IPD Sharing: Not stated. Countries: 1. Publications: 6.
Evaluation of Role of Transient Elastography (Fibroscan) in Differentiating Patients of Acute Severe Viral Hepatitis and Acute on Chronic Liver Failure
ClinicalTrials.gov study NCT01866072. IPD Sharing: Not stated. Countries: 1. Publications: 8.
Effect of Sinbiotic With Multispecies Probiotics on Liver Parameters Liver Enzymes, Ultrasound, Elastography and Adipokines in Same Cases) in Patients With Metabolic Associated Steatotic Liver Disease
ClinicalTrials.gov study NCT07025980. IPD Sharing: NO. Countries: 1. Publications: 12.
Application of Ultrasound Artificial Intelligence and Elastography in Differential Diagnosis of Thyroid Nodules
ClinicalTrials.gov study NCT03887611. IPD Sharing: NO. Countries: 1. Publications: 1.
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