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Shear-wave elastography

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https://www.readbyqxmd.com/read/28214021/arfi-elastography-changes-after-direct-acting-antiviral-treatment-in-transplanted-livers-with-relapse-of-hepatitis-c-virus-infection
#1
M Alfageme Zubillaga, T Fontanilla Echeveste, I Pérez González, A Royuela Vicente, A M Duca, R M Ruiz Peralbo, C González Hernando
OBJECTIVE: To evaluate the changes in the values obtained in acoustic radiation force impulse (ARFI) elastography of the liver after antiviral treatment in patients with liver transplants and hepatitis C virus (HVC) infection recurring after transplantation. MATERIAL AND METHODS: We studied 15 patients infected with HVC who had received liver transplants where an HVC infection recurring in the graft within one year after the transplant was treated with direct-acting antivirals...
February 14, 2017: Radiología
https://www.readbyqxmd.com/read/28211807/two-dimensional-shear-wave-elastography-of-breast-lesions-comparison-of-two-different-systems
#2
Wei-Wei Ren, Xiao-Long Li, Ya-Ping He, Dan-Dan Li, Dan Wang, Chong-Ke Zhao, Xiao-Wan Bo, Bo-Ji Liu, Wen-Wen Yue, Hui-Xiong Xu
OBJECTIVE: To evaluate the diagnostic performance of two different shear wave elastography (SWE) techniques in distinguishing malignant breast lesions from benign ones. MATERIALS AND METHODS: From March 2016 to May 2016, a total of 153 breast lesions (mean diameter, 16.8 mm±10.5; range 4.1-90.0 mm) in 153 patients (mean age, 46.4 years±15.1; age range 20-86 years) were separately performed by two different SWE techniques (i.e. T-SWE, Aplio500, Toshiba Medical System, Tochigi, Japan; and S-SWE, the Aixplorer US system, SuperSonic Imagine, Provence, France)...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28211803/comparison-of-two-different-2d-shear-wave-speed-imaging-techniques-for-diagnosis-of-thyroid-nodules-the-first-initial-experience
#3
Ya-Ping He, Hui-Xiong Xu, Xiao-Long Li, Dan-Dan Li, Xiao-Wan Bo, Chong-Ke Zhao, Bo-Ji Liu, Dan Wang, Hui-Xiong Xu
OBJECTIVE: The aim of this study was to compare the diagnostic performance of two different 2D shear wave speed imaging techniques of Virtual Touch Tissue Imaging & Quantification (VTIQ) and Toshiba shear wave elastography (T-SWE) in predicting malignant thyroid nodules (TNs). MATERIALS AND METHODS: 75 TNs in 75 patients which were subject to both VTIQ and T-SWE examinations were enrolled and analyzed. Shear wave speed (SWS) values on VTIQ and T-SWE were computed (SWS_max, min, mean and median)...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28211802/evaluation-of-the-severity-of-capsular-contracture-using-elastography-after-breast-implant-reconstruction
#4
Yoshihiro Sowa, Isao Yokota, Sizu Itsukage, Katsuhiko Nakatsukasa, Katsuhiko Sakaguchi, Tetsuya Taguchi, Toshiaki Numajiri
BACKGROUND: Capsular contracture around implants is a common complication after breast reconstruction. Strain elastography (STE) and shear-wave elastography (SWE) are noninvasive imaging techniques that can measure tissue stiffness and thickness of the capsule. OBJECTIVE: The purposes of the study were to compare STE and SWE for measurement of capsular contracture after breast implant reconstruction using intra-class correlation coefficients (ICCs) and to investigate the correlation of these data with the Baker score, which is the most frequently used clinical staging scale for capsule contracture...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28208973/shear-wave-elastography-features-of-primary-non-hodgkin-s-lymphoma-of-the-breast-a-case-report-and-literature-review
#5
Youdong Kim, Kyung Hee Ko, Hae Kyoung Jung, Hyun Ju Lee
Lymphoma is a rare malignancy of the breast, comprising approximately 0.04 to 0.5% of breast malignancies. Because the clinical findings of breast lymphoma are nonspecific and similar to those of breast carcinoma, it is important to distinguish breast lymphoma from other breast disease on the basis of radiologic findings. Elastography is an interesting imaging tool that reflects the tissue stiffness, increasingly being used in the evaluation of breast tumours. However, only a limited number of studies have focused on the elastographic findings of breast lymphoma...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207961/muscle-stiffness-of-posterior-lower-leg-in-runners-with-a-history-of-medial-tibial-stress-syndrome
#6
Junya Saeki, Masatoshi Nakamura, Sayaka Nakao, Kosuke Fujita, Ko Yanase, Noriaki Ichihashi
Previous history of medial tibial stress syndrome (MTSS) is a risk factor for MTSS relapse, which suggests that there might be some physical factors that are related to MTSS development in runners with a history of MTSS. The relationship between MTSS and muscle stiffness can be assessed in a cross-sectional study that measures muscle stiffness in subjects with a history of MTSS, who do not have pain at the time of measurement, and in those without a history of MTSS. The purpose of this study was to compare the shear elastic modulus, which is an index of muscle stiffness, of all posterior lower leg muscles of subjects with a history of MTSS and those with no history and investigate which muscles could be related to MTSS...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28192849/shear-wave-elastography-of-the-liver-review-on-normal-values
#7
Yi Dong, Roxana Sirli, Giovanna Ferraioli, Ioan Sporea, Liliana Chiorean, Xinwu Cui, Mei Fan, Wen-Ping Wang, Odd Helge Gilja, Paul S Sidhu, Christoph F Dietrich
Shear wave elastography (SWE) has been developed to non-invasively estimate liver stiffness. Different techniques are available and they are described in detail in the EFSUMB guidelines on elastography. However, there are only a few published studies investigating normal ranges in healthy subjects by comparing different equipment and analysing influencing factors. In the present review, we summarize the impact factors on liver stiffness measurement (LSM) using SWE, report its reproducibility, and define normal range tables of LSM in healthy subjects for clinical practice according to the published literature...
February 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28188109/quantitative-evaluation-of-masseter-muscle-stiffness-in-patients-with-temporomandibular-disorders-using-shear-wave-elastography
#8
Makiko Takashima, Yoshiaki Arai, Atsushi Kawamura, Takafumi Hayashi, Ritsuo Takagi
PURPOSE: The aim of this study was to quantify masseter muscle stiffness in patients with masticatory myofascial pain. METHODS: Stiffness was measured using shear wave elastography, which expresses stiffness as shear wave velocity (Vs). A phantom study was conducted to confirm the reliability of the measuring device. The study participants were 26 females with bilateral masseter muscle pain who were classified into either Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) group Ia (myofascial pain; n=13) or RDC/TMD group Ib (myofascial pain with limited opening; n=13)...
February 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28187927/value-of-shear-wave-elastography-in-the-diagnosis-of-gouty-and-non-gouty-arthritis
#9
Yuanjiao Tang, Feng Yan, Yujia Yang, Xi Xiang, Liyun Wang, Lingyan Zhang, Li Qiu
Our aim was to analyze the diagnostic performance of shear wave elastography (SWE) in the diagnosis of gouty arthritis (GA) and non-gouty arthritis (non-GA). Thirty-nine patients in the GA group and 55 patients in the non-GA group were included in the study. Based on the echo intensity of the joint lesions, the GA group was subdivided into hypo-echoic GA, slightly hyper-echoic GA and hyper-echoic GA subgroups. Quantitative SWE features were evaluated and receiver operating characteristic analysis was performed...
February 7, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28180197/added-value-of-two-dimensional-shear-wave-elastography-to-ultrasonography-for-staging-common-femoral-vein-thrombi
#10
Fu-Shun Pan, Wen-Shuo Tian, Jia Luo, Ming Liu, Jin-Yu Liang, Ming Xu, Yan-Ling Zheng, Xiao-Yan Xie
: prove the performance for staging common femoral vein thrombi (CFVT). MATERIAL AND METHODS: A total of 194 consecutive patients with CFVT who underwent US and 2D-SWE were enrolled. These patients were categorized into three groups according to CFVT duration: Stage A (≤14 days), Stage B (14 days to 6 months), and Stage C (≥6 months). The diagnostic performance was assessed by the area under the receiver operating characteristic curve (AUC). RESULTS: Among all US features, CFV diameter ratio of thrombosed leg to contralateral leg (CFVD_ratio) showed the highest AUC in predicting Stage A and Stage C (0...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28180195/evaluation-of-the-optic-nerve-using-strain-and-shear-wave-elastography-in-patients-with-multiple-sclerosis-and-healthy-subjects
#11
Mikail İnal, Sinan Tan, Erhan M Yumusak, Mehmet Hamdi Şahan, Murat Alpua, Kemal Örnek
AIMS: Our aim was to evaluate the elasticity features of the optic nerve using strain (SE) and shear wave elastography (SWE) in multiple sclerosis (MS) patients in comparison with healthy subjects. MATERIAL AND METHODS: One hundred and seven optic nerves from 54 MS patients and 118 optic nerves from 59 healthy subjects were examined prospectively by SE and SWE. Optic nerves were divided into three types in accordance to the elasticity designs, as follows: type 1 predominantly blue (hardest tissue); type 2 predominantly blue/green (hard tissue); and type 3 predominantly green (intermediate tissue)...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28180192/shear-wave-elastography-imaging-for-detecting-malignant-lesions-of-the-liver-a-systematic-review-and-pooled-meta-analysis
#12
Yang Jiao, Fajin Dong, Hui Wang, Lei Zhang, Jinfeng Xu, Jing Zheng, Haibo Fan, Hanjing Gan, Lixin Chen, Min Li
AIM: To investigate the clinical utility of shear wave elastography (SWE) imaging in the identification of malignant and benign lesions of the liver lesions by conducting a meta-analysis. MATERIAL AND METHODS: The Cochrane library, Embase and Pubmed were searched for relevant studies with publication data through February 2016. Studies evaluating the diagnostic accuracy of SWE in the identification of malignant and benign lesions of the liver using SWE technology were selected...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28169137/shoulder-horizontal-abduction-stretching-effectively-increases-shear-elastic-modulus-of-pectoralis-minor-muscle
#13
Jun Umehara, Masatoshi Nakamura, Kosuke Fujita, Ken Kusano, Satoru Nishishita, Kojiro Araki, Hiroki Tanaka, Ko Yanase, Noriaki Ichihashi
BACKGROUND: Stretching maneuvers for the pectoralis minor muscle, which involve shoulder horizontal abduction or scapular retraction, are performed in clinical and sports settings because the tightness of this muscle may contribute to scapular dyskinesis. The effectiveness of stretching maneuvers for the pectoralis minor muscle is unclear in vivo. The purpose of this study was to verify the effectiveness of stretching maneuvers for the pectoralis minor muscle in vivo using ultrasonic shear wave elastography...
February 3, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28168373/shear-wave-elastography-in-the-diagnosis-of-breast-non-mass-lesions-factors-associated-with-false-negative-and-false-positive-results
#14
So Yoon Park, Ji Soo Choi, Boo-Kyung Han, Eun Young Ko, Eun Sook Ko
OBJECTIVE: To investigate factors related to false shear wave elastography (SWE) results for breast non-mass lesions (NMLs) detected by B-mode US. METHODS: This retrospective study enrolled 152 NMLs detected by B-mode US and later pathologically confirmed (79 malignant, 73 benign). All lesions underwent B-mode US and SWE. Quantitative (mean elasticity [E mean]) and qualitative (maximum stiffness colour) SWE parameters were assessed, and 'E mean > 85.1 kPa' or 'stiff colour (green to red)' determined malignancy...
February 6, 2017: European Radiology
https://www.readbyqxmd.com/read/28161870/acute-effect-of-static-stretching-on-passive-stiffness-of-the-human-gastrocnemius-fascicle-measured-by-ultrasound-shear-wave-elastography
#15
Kosuke Hirata, Hiroaki Kanehisa, Naokazu Miyamoto
PURPOSE: Passive muscle stiffness and muscle architecture at a given joint angle, as well as slack angle of the muscle have been shown to change after an acute bout of stretching. However, it remains unclear whether passive muscle stiffness at a given fascicle length is reduced after stretching. We aimed to elucidate the acute effect of static stretching on the passive fascicle stiffness using ultrasound shear wave elastography. METHODS: Shear modulus, fascicle length, and slack angle of the medial gastrocnemius (MG) as well as passive plantar flexion torque during passive dorsiflexion were measured before and after a 5-min static stretching in 14 healthy males...
February 4, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28160573/shear-wave-elastography-combined-with-the-thyroid-imaging-reporting-and-data-system-for-malignancy-risk-stratification-in-thyroid-nodules
#16
Zhao Liu, Hui Jing, Xue Han, Hua Shao, Yi-Xin Sun, Qiu-Cheng Wang, Wen Cheng
To retrospectively evaluate the diagnostic performance of shear wave elastography (SWE) and thyroid imaging reporting and data system (TI-RADS) in differentiating malignant and benign thyroid nodules. A total of 313 thyroid nodules in 227 patients were included. All thyroid nodules were underwent SWE and TI-RADS before fine needle aspiration biopsy and/or surgery. SWE elasticity indices of the maximum (Emax), mean (Emean), minimum (Emin) and elastic ratio (ER) in thyroid nodules were measured. Nodules with solid component, marked hypoechogenicity, poorly defined margins, micro-calcifications, and a taller-than-wide shape were classified as suspicious at gray-scale ultrasonography...
February 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28138406/inability-of-shear-wave-elastography-to-distinguish-malignant-from-benign-prostate-tissue-a-comparison-of-biopsy-whole-mount-sectioning-and-shear-wave-elastography
#17
Markus Porsch, Claudia Görner, Johann Jakob Wendler, Uwe-Bernd Liehr, Anke Lux, Sandra Siedentopf, Martin Schostak, Maciej Pech
AIM: This study was designed to assess the possible usefulness of shear-wave elastography in differentiating between benign and malignant tissue in prostate neoplasia. PATIENTS AND METHODS: A total of 120 prostate tissue samples were obtained from 10 patients treated by radical prostatectomy and investigated pre-operatively by ultrasound elastography followed by directed biopsy. After resection, whole-mount sectioning and histological examination was performed. The predictions based on shear-wave elastography were compared with biopsy and histological results...
December 2016: Journal of Ultrasonography
https://www.readbyqxmd.com/read/28129289/ultrasound-shear-wave-elastography-and-contrast-enhancement-effective-biomarkers-in-crohn-s-disease-strictures
#18
Cathy Lu, Xianyong Gui, Wenqian Chen, Tak Fung, Kerri Novak, Stephanie R Wilson
BACKGROUND: Inflammation, fibrosis, and muscular hypertrophy lead to thickened bowel in Crohn's disease forming strictures. Ultrasound shear wave elastography (SWE) measures bowel wall stiffness. Contrast-enhanced ultrasound (CEUS) uniquely detects bowel wall inflammation. We aim to correlate SWE of ileal Crohn's disease in vivo to CEUS peak enhancement and pathology grades of inflammation, fibrosis, and muscular hypertrophy. METHODS: In a prospective institutional review board-approved study, 105 consecutive ileal patients with Crohn's disease received ultrasound...
January 26, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28124382/effects-of-warm-up-on-hamstring-muscles-stiffness-cycling-vs-foam-rolling
#19
A J Morales-Artacho, L Lacourpaille, G Guilhem
This study investigated the effects of active and/or passive warm-up tasks on the hamstring muscles stiffness through elastography and passive torque measurements. On separate occasions, fourteen males randomly completed four warm-up protocols comprising Control, Cycling, Foam rolling, or Cycling plus Foam rolling (Mixed). The stiffness of the hamstring muscles was assessed through shear wave elastography, along with the passive torque-angle relationship and maximal range of motion (ROM) before, 5, and 30 minutes after each experimental condition...
January 26, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28118179/two-dimensional-shear-wave-elastography-a-new-method-comparable-to-acoustic-radiation-force-impulse-imaging
#20
Barbara Schellhaas, Deike Strobel, Dane Wildner, Ruediger S Goertz, Markus F Neurath, Lukas Pfeifer
OBJECTIVES: Two-dimensional shear-wave elastography (2D-SWE) is an ultrasound-based technique for the noninvasive assessment of tissue stiffness. In contrast to the well-established point-shear-wave elastography (pSWE) method acoustic radiation force impulse imaging, there is little evidence on the performance and usefulness of 2D-SWE in the assessment of liver stiffness. Thus, the aim of our study was to compare 2D-SWE versus pSWE. MATERIALS AND METHODS: 2D-SWE and pSWE were performed in 20 cirrhotic patients, 20 healthy individuals and an elasticity phantom...
January 21, 2017: European Journal of Gastroenterology & Hepatology
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