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Shear-wave elastography

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https://www.readbyqxmd.com/read/28526455/comparison-of-3d-and-2d-shear-wave-elastography-for-differentiating-benign-and-malignant-breast-masses-focus-on-the-diagnostic-performance
#1
H Y Choi, Y-M Sohn, M Seo
AIM: To evaluate the diagnostic performance of three-dimensional (3D) image shear-wave elastography (SWE) for differentiating benign from malignant breast masses compared to two-dimensional (2D) SWE and B-mode ultrasound (US). MATERIALS AND METHODS: This study consisted of 205 breast lesions from 199 patients who underwent B-mode US and SWE before biopsy from January 2014 to March 2016. Quantitative elasticity values (maximum and mean elasticity, Emax and Emean) obtained from 2D and 3D SWE (axial, sagittal, and coronal images) were reviewed retrospectively, in addition to the histopathological findings including immunohistochemistry profiles (luminal A, luminal B, human epidermal growth factor receptor 2 (HER2)-enriched, and triple-negative breast cancer) in cases of malignancy...
May 16, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28525336/accuracy-of-real-time-shear-wave-elastography-in-the-assessment-of-normal-liver-tissue-in-the-guinea-pig-cavia-porcellus
#2
K Glińska-Suchocka, K Kubiak, J Spużak, M Jankowski, P Borusewicz
Shear wave elastography is a novel technique enabling real-time measurement of the elasticity of liver tissue. The color map is superimposed on the classic ultrasound image of the assessed tissue, which enables a precise evaluation of the stiffness of the liver tissue. The aim of the study was to assess the stiffness of normal liver tissue in the guinea pig using shear wave elastography. The study was carried out on 36 guinea pigs using the SuperSonic Imagine Aixplorer scanner, and a 1 to 6 MH convex SC6-1 transducer...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28522902/non-invasive-evaluation-of-intestinal-disorders-the-role-of-elastographic-techniques
#3
REVIEW
Federica Branchi, Flavio Caprioli, Stefania Orlando, Dario Conte, Mirella Fraquelli
Over the recent years the non-invasive techniques for the evaluation of the small bowel have been playing a major role in the management of chronic intestinal diseases, such as inflammatory bowel diseases (IBD). The diagnostic performances of magnetic resonance imaging, computed tomography and ultrasound in the field of small bowel disorders, have been assessed and established for more than two decades. Newer sonographic techniques, such as strain elastography and shear wave elastography, have been put forward for the assessment of disease activity and characterization of IBD-related damage in the setting of Crohn's disease and other gastrointestinal disorders...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28516045/exploration-of-highly-accelerated-magnetic-resonance-elastography-using-high-density-array-coils
#4
John C Bosshard, Naresh Yallapragada, Mary P McDougall, Steven M Wright
BACKGROUND: Magnetic resonance elastography (MRE) measures tissue mechanical properties by applying a shear wave and capturing its propagation using magnetic resonance imaging (MRI). By using high density array coils, MRE images are acquired using single echo acquisition (SEA) and at high resolutions with significantly reduced scan times. METHODS: Sixty-four channel uniplanar and 32×32 channel biplanar receive arrays are used to acquire MRE wave image sets from agar samples containing regions of varying stiffness...
April 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28514259/does-type-1-diabetes-mellitus-affect-the-shear-wave-velocity-of-the-thyroid-gland-of-children-without-autoimmune-thyroiditis
#5
Dilek Sağlam, Meltem Ceyhan Bilgici, Cengiz Kara, Gülay Can Yilmaz, Asli Tanrivermiş Sayit
OBJECTIVE: The aim of this study is to evaluate the shear wave velocity (SWV) of the thyroid gland with acoustic radiation force impulse elastography in children with type 1 diabetes mellitus (T1D). MATERIALS AND METHODS: Between November 2015 and April 2016, 35 T1D patients who were referred to our hospital's endocrinology outpatient clinic (mean age, 11.88 ± 4.1 years) and 30 children (mean age, 11.3 ± 3.08 years) in the control group were enrolled in the study...
May 16, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28513511/comparison-of-elasticity-values-of-the-right-lobe-of-the-liver-of-normal-weight-and-morbidly-obese-turkish-patients
#6
S Aksoy, C Colak, M O Nalbant, R Turkay, I Erdil, E Hocaoglu, E Inci, H Alis
INTRODUCTION: Shear wave elastography is a method for the measurement of tissue stiffness. The advantage of this method is that its outcome is not operator dependent. Our aim was to compare the elastiscity values of the right lobe of the liver of normal weighted and morbidly obese patients. MATERIALS AND METHODS: The mean elastiscity values of the right lobe of the liver were calculated for 38 normal weighted and 37 morbidly obese patients. All the patients had no history of liver disease...
May 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28513280/application-of-acoustic-radiation-force-impulse-arfi-elastography-in-imaging-of-delayed-onset-muscle-soreness-doms-a-comparative-analysis-with-3t-mri
#7
Thilo Hotfiel, Marion Kellermann, Bernd Swoboda, Dane Wildner, Tobias Golditz, Casper Grim, Martin Raithel, Michael Uder, Rafael Heiss
CONTEXT: DOMS is one of the most common reasons for impaired muscle performance in sports and is associated with reduced muscle strength and frequently observed both in professional and recreational athletes. OBJECTIVE: To emphasize the diagnostic value of Acoustic Radiation Force Impulse (ARFI) in imaging of Delayed Onset Muscle Soreness by comparing findings to high-resolution 3T MRI T2 weighted sequences. DESIGN: Case series. SETTING: Laboratory environment...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28513127/shear-wave-elastography-in-breast-ultrasonography-the-state-of-the-art
#8
Ji Hyun Youk, Hye Mi Gweon, Eun Ju Son
Shear-wave elastography (SWE) is a recently developed ultrasound technique that can visualize and measure tissue elasticity. In breast ultrasonography, SWE has been shown to be useful for differentiating benign breast lesions from malignant breast lesions, and it has been suggested that SWE enhances the diagnostic performance of ultrasonography, potentially improving the specificity of conventional ultrasonography using the Breast Imaging Reporting and Data System criteria. More recently, not only has SWE been proven useful for the diagnosis of breast cancer, but has also been shown to provide valuable information that can be used as a preoperative predictor of the prognosis or response to chemotherapy...
April 5, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28512326/accuracy-of-shear-wave-elastography-for-the-diagnosis-of-prostate-cancer-a-meta-analysis
#9
Liang Sang, Xue-Mei Wang, Dong-Yang Xu, Yun-Fei Cai
Many studies have established the high diagnostic accuracy of shear wave elastography (SWE) for the detection of prostate cancer (PCa); however, its utility remains a subject of debate. This meta-analysis sought to appraise the overall accuracy of SWE for the detection of PCa. A literature search of the PubMed, Embase, Cochrane Library, Web of Science and CNKI (China National Knowledge Infrastructure) databases was conducted. In all of the included studies, the diagnostic accuracy of SWE was compared with that of histopathology, which was used as a standard...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511961/pre-operative-evaluation-of-axillary-lymph-node-status-in-patients-with-suspected-breast-cancer-using-shear-wave-elastography
#10
Ji Hyun Youk, Eun Ju Son, Jeong-Ah Kim, Hye Mi Gweon
The aim of this study was to evaluate shear wave elastography (SWE) for pre-operative evaluation of axillary lymph node (LN) status in patients with suspected breast cancer. A total of 130 axillary LNs in 130 patients who underwent SWE before fine-needle aspiration, core biopsy or surgery were analyzed. On gray-scale images, long and short axes, shape (elliptical or round), border (sharp or unsharp) and cortical thickening (concentric, eccentric or no fatty hilum) of LNs were assessed. On SWE, mean, maximum, minimum, standard deviation and the lesion-to-fat ratio (Eratio) values of elasticity were collected...
May 13, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28510795/liver-stiffness-assessed-by-shear-wave-elastography-predicts-postoperative-liver-failure-in-patients-with-hepatocellular-carcinoma
#11
Yinghao Shen, Chenhao Zhou, Guodong Zhu, Guoming Shi, Xiaodong Zhu, Cheng Huang, Jian Zhou, Jia Fan, Hong Ding, Ning Ren, Hui-Chuan Sun
BACKGROUND: Cirrhosis increases a patient's risk of developing postoperative liver failure (PLF). Liver stiffness (LS), assessed by two-dimensional shear wave elastography (SWE), indicates liver fibrosis with high accuracy. Whether LS is superior to portal hypertension (PHT) in predicting PLF remains to be studied. METHODS: The study enrolled 280 patients who underwent hepatectomy for hepatocellular carcinoma from July 2015 to July 2016. All patients received preoperative assessments for LS, PHT, and serum markers of liver fibrosis in addition to other clinicopathological tests...
May 16, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28510583/liver-fibrosis-staging-with-a-new-2d-shear-wave-elastography-using-comb-push-technique-applicability-reproducibility-and-diagnostic-performance
#12
Sang Min Lee, Jeong Min Lee, Hyo-Jin Kang, Hyung Kung Yang, Jeong Hee Yoon, Won Chang, Su Joa An, Kyoung Bun Lee, Seung Yon Baek
OBJECTIVE: To evaluate the applicability, reproducibility, and diagnostic performance of a new 2D-shear wave elastography (SWE) using the comb-push technique (2D CP-SWE) for detection of hepatic fibrosis, using histopathology as the reference standard. MATERIALS AND METHODS: This prospective study was approved by the institutional review board, and informed consent was obtained from all patients. The liver stiffness (LS) measurements were obtained from 140 patients, using the new 2D-SWE, which uses comb-push excitation to produce shear waves and a time-aligned sequential tracking method to detect shear wave signals...
2017: PloS One
https://www.readbyqxmd.com/read/28509432/feasibility-assessment-of-shear-wave-elastography-to-lumbar-back-muscles-a-radioanatomic-study
#13
Maud Creze, Krystel Nyangoh Timoh, Olivier Gagey, Laurence Rocher, Marie-France Bellin, Marc Soubeyrand
INTRODUCTION: Low back pain is often associated with tensional changes in the paraspinal muscles detected by palpatory procedures. Shear wave elastography (SWE), recently introduced, allows the stiffness of muscles to be assessed non-invasively. The aim of our work was to study the feasibility of using SWE on the three main lumbar back muscles (multifidus, longissimus and iliocostalis) in vivo after analyzing their muscular architecture ex vivo. MATERIALS AND METHODS: We determined the orientation of fibers in the multifidus, longissimus and iliocotalis muscles in seven fresh cadavers using gross anatomy and B-Mode ultrasound imaging...
May 16, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28493799/shear-wave-elastography-basic-physics-and-musculoskeletal-applications
#14
Mihra S Taljanovic, Lana H Gimber, Giles W Becker, L Daniel Latt, Andrea S Klauser, David M Melville, Liang Gao, Russell S Witte
In the past 2 decades, sonoelastography has been progressively used as a tool to help evaluate soft-tissue elasticity and add to information obtained with conventional gray-scale and Doppler ultrasonographic techniques. Recently introduced on clinical scanners, shear-wave elastography (SWE) is considered to be more objective, quantitative, and reproducible than compression sonoelastography with increasing applications to the musculoskeletal system. SWE uses an acoustic radiation force pulse sequence to generate shear waves, which propagate perpendicular to the ultrasound beam, causing transient displacements...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28491186/quantifying-spasticity-in-individual-muscles-using-shear-wave-elastography
#15
Sarah F Eby, Heng Zhao, Pengfei Song, Barbara J Vareberg, Randall R Kinnick, James F Greenleaf, Kai-Nan An, Allen W Brown, Shigao Chen
Spasticity is common following stroke; however, high subject variability and unreliable measurement techniques limit research and treatment advances. Our objective was to investigate the use of shear wave elastography (SWE) to characterize the spastic reflex in the biceps brachii during passive elbow extension in an individual with spasticity. The patient was a 42-year-old right-hand-dominant male with history of right middle cerebral artery-distribution ischemic infarction causing spastic left hemiparesis...
June 2017: Radiology case reports
https://www.readbyqxmd.com/read/28489803/reproducibility-analysis-on-shear-wave-elastography-swe-based-quantitative-assessment-for-skin-elasticity
#16
Yang Sun, Chuan Ma, XiaoLong Liang, Run Wang, Ying Fu, ShuMin Wang, LiGang Cui, ChunLei Zhang
Shear Wave Elastography (SWE) is an objective and non-invasive method widely used to quantify the tissue solidity. However, there are concerns about the accuracy of the skin SWE results due to the low signal-to-noise ratio (SNR) caused by subcutaneous fat, muscle and bone. This article analyzed the reproducibility of the result for skin SWE and therefore evaluated the availability of SME for skin elasticity involved diseases. Thirty volunteers (mean age: 37 ± 12 years) were selected. SWE were taken on the skin of abdomen and the middle tibia in order to assess the impact of fat, muscle and bone on SWE results...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28486823/the-role-of-shear-wave-elastography-in-the-assessment-of-placenta-previa-accreta
#17
Ebru Alıcı Davutoglu, Hatice Ariöz Habibi, Ayşegül Ozel, Mehmet Aytac Yuksel, Ibrahim Adaletli, Riza Madazlı
OBJECTIVE: To evaluate the value of shear wave elastography (SWE) in the prediction of morbidly adherent placenta. METHODS: Forty-three women with normal placental location and 26 women with anteriorly localized placenta previa were recruited for this case-control study. Placental elasticity values in both the groups were determined by SWE imaging. RESULTS: SWE values were higher in the placenta previa group in all regions than in normal localized placentas (p < ...
May 9, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28483579/comparison-of-2-d-shear-wave-elastography-and-transient-elastography-for-assessing-liver-fibrosis-in-chronic-hepatitis-b
#18
Jie Zeng, Jian Zheng, Zeping Huang, Shigao Chen, Jing Liu, Tao Wu, Rongqin Zheng, Mingde Lu
This study compared 2-D shear wave elastography (SWE) and transient elastography (TE) for liver fibrosis staging in patients with chronic hepatitis B (CHB) infection using liver biopsy as the reference standard. Patients with CHB infection who underwent liver biopsy were consecutively included. After exclusions, 257 patients were analyzed. Two-dimensional SWE resulted in a significantly higher rate of reliable measurements (98.1%, 252/257) than TE (93.0%, 239/257) (p = 0.011). Liver stiffness measurements of the two examinations exhibited a strong correlation (r = 0...
May 5, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28482623/diagnostic-value-of-contrast-enhanced-ultrasound-and-shear-wave-elastography-for%C3%A2-breast-lesions-of-sub-centimeter
#19
Li-Hua Xiang, Ming-Hua Yao, Guang Xu, Huan Pu, Hui Liu, Yan Fang, Rong Wu
BACKGROUD: Contrast-enhanced ultrasound (CEUS) and shear-wave elastography (SWE) are used for diagnostic purposes. OBJECTIVE: Investigate the diagnostic value of CEUS and SWE for breast lesions of sub-centimeter diameter. METHODS: Sixty-two patients (mean age: 49.3±12.1 years) with 66 lesions (mean diameter, 8.1±1.5 mm) were analyzed. Conventional ultrasound (US), CEUS and SWE were undertaken. Pathologic specimens were obtained through biopsy or surgery...
May 2, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28480681/the-role-of-liver-segment-to-spleen-volume-ratio-in-the-staging-of-hepatic-fibrosis-in-patients-with-hepatitis-c-virus-infection
#20
Eyal Lotan, Stephen P Raskin, Michal M Amitai, Yeruham Kleinbaum, Ella Veitsman, Peretz Weiss, Oranit Cohen-Ezra, Tania Berdichevski, Ziv Ben-Ari
BACKGROUND: Accurate assessment of liver fibrosis is crucial for the management of patients with hepatitis C virus (HCV) infection. OBJECTIVES: To evaluate the performance of liver segment-to-spleen volume ratio in predicting the severity of liver fibrosis. METHODS: Sixty-four consecutive HCV patients were enrolled in this retrospective study. All patients underwent contrast-enhanced computed tomography (CT) and were divided into three groups based on their hepatic fibrosis stage evaluated by shear-wave elastography (SWE): non-advanced (F0-F1, n=29), advanced (F2, n=19) and severe fibrosis (F3-F4, n=16)...
April 2017: Israel Medical Association Journal: IMAJ
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