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Shear wave elastography

Enrico Maria Zardi, Edoardo Franceschetti, Chiara Giorgi, Alessio Palumbo, Francesco Franceschi
AIM: The aim of this work was to evaluate the reliability of pSWE in assessing the stiffness of the vastus medialis muscle and of the quadriceps and patellar tendons. MATERIAL AND METHODS: For this purpose, 18 subjects (9 males and 9 females of 57±22 years) in good clinical conditions were included in this study. pSWE examination was conducted by a unique expert operator with more than ten years of experience in musculoskeletal ultrasound. Two sets of five measurements for each muscle and tendon district were bilaterally performed at the same manner, at least fifteen minutes apart...
February 17, 2019: Medical Ultrasonography
San Min Lee, Won Chang, Hyo-Jin Kang, Su Joa Ahn, Jeong-Hoon Lee, Jeong Min Lee
AIMS: To compare the applicability, reliability and stiffness values of four different shear wave elastography (SWE) platforms and to determine the influence of abdominal wall thickness on those of four SWE platforms evaluating liver fibrosis. Material and methods: We used four different SWE platforms: transient elastography (TE), pSWE (S-shear wave), 2D SWE/ SSI (SuperSonic Imagine) and 2D SWE/GE (GE Health care). To identify the effect of abdominal wall thickness, five commercially available liver fibrosis phantoms were covered in 1...
February 17, 2019: Medical Ultrasonography
Pinar Doruk Analan, Hulya Aslan
OBJECTIVES: Cerebral palsy (CP) increases the risk of hip displacement during childhood. Abnormal hip muscle forces have been proposed as the predisposing factors. In CP, the amount of hip displacement is commonly evaluated by the Reimers hip migration index (MI) on an anteroposterior pelvic radiograph. To the best of our knowledge, the association between the elasticity of hip muscles measured by shear wave elastography and the MI has not been studied yet. Herein, we aimed to analyze the correlation between the elasticity of hip muscles and the MI...
February 18, 2019: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Monika Smaś, Maciej Skubera, Tadeusz Wilkosz, Piotr Weryński, Jacek Kołcz, Maria Olszowska, Piotr Podolec, Lidia Tomkiewicz-Pająk
INTRODUCTION A hemodynamic derangement in Fontan circulation causes liver pathology identified as Fontan associated liver disease. Although liver biopsy in a standard for recognition of liver fibrosis, noninvasive methods are being developed, including shear wave elastography (SWE). Objectives: The aim of the study was to evaluate the degree of liver stiffness (LS) using SWE among Fontan patients in a long-term follow-up and to investigate the relationship between patient characteristics and LS. PATIENTS AND METHODS 59 Fontan patients were included in the study...
February 19, 2019: Polish Archives of Internal Medicine
G Jedrzejewski, P Osemlak, A P Wieczorek, P Nachulewicz
INTRODUCTION: Shear wave elastography is an ultrasound technique for non-invasive quantification of tissue stiffness. It was used in assessing testis elasticity in some scrotal abnormalities, such as undescended pediatric testes or adult varicocele testes. In this study, its usefulness in adolescent patients with varicocele was examined. OBJECTIVE: The aim of this study was to quantify elasticity of testes with the use of elastography and comparison of the results with typical threshold values used in varicocele management in adolescent patients with varicoceles...
January 25, 2019: Journal of Pediatric Urology
Alican Kılıç, Hale Çolakoğlu Er
PURPOSE: We aimed to prospectively examine virtual touch tissue imaging quantification (VTIQ) shear wave elastography (SWE) and conventional (B-mode and Doppler) ultrasonography (US), individually and combined, for their ability to differentiate benign and malignant cervical lymph nodes (CLNs). METHODS: One hundred enlarged lymph nodes (LNs) from 72 patients, confirmed by histopathologic diagnoses, were included in the present study. B-mode US, Doppler US, and SWE were performed before histopathologic sampling of the LNs...
February 18, 2019: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
Abdulrahman M Alfuraih, Ai Lyn Tan, Philip O'Connor, Paul Emery, Richard J Wakefield
BACKGROUND: Skeletal muscle undergoes structural changes with ageing which may alter its biomechanical properties. Shear wave elastography (SWE) may detect these changes by measuring muscle stiffness. AIMS: To investigate muscle stiffness in healthy young, middle-aged and elderly cohorts using SWE and correlate it with muscle strength and mass. METHODS: Shear wave velocity (SWV) was measured in the quadriceps, hamstrings and biceps brachii of 26 young (range 20-35 years), 21 middle-aged (40-55) and 30 elderly (77-94) volunteers...
February 14, 2019: Aging Clinical and Experimental Research
J Shang, L-T Ruan, Y-Y Wang, X-J Zhang, Y Dang, B Liu, W-L Wang, Y Song, S-J Chang
AIM: To investigate the role of utilizing size-based thresholds of stiffness gradient in diagnosing solid breast lesions and optimizing original Breast Imaging-Reporting And Data System (BI-RADS) classifications. MATERIALS AND METHODS: Two-hundred and twenty-seven consecutive women underwent shear-wave elastography (SWE) before ultrasound-guided biopsy, and 234 solid breast lesions categorized as BI-RADS 3-5 were analysed. Receiver operating characteristic curve analysis was performed based on histopathology...
February 9, 2019: Clinical Radiology
Mitsuhiro Masaki, Xiang Ji, Taishi Yamauchi, Hiroshige Tateuchi, Noriaki Ichihashi
PURPOSE: The present study aimed to clarify the effects of the trunk position on muscle stiffness that reflects elongation of the lumbar erector spinae and lumbar multifidus muscles using ultrasonic shear wave elastography (SWE). METHODS: The study included ten healthy men. The shear elastic modulus of the left lumbar erector spinae and lumbar multifidus muscles were evaluated using ultrasonic SWE. Measurement postures for the left lumbar erector spinae muscle were (1) prone position (Rest), (2) sitting position with the trunk flexed (Flexion), (3) the Flexion position adding right trunk lateral flexion (Flexion-Lateral Flexion), and (4) the Flexion position adding right trunk rotation (Flexion-Rotation 1)...
February 12, 2019: European Journal of Applied Physiology
Chutimon Thanaboonnipat, Saikaew Sutayatram, Chollada Buranakarl, Nan Choisunirachon
BACKGROUND: Chronic kidney disease (CKD) is one of the most common diseases occurring in cats. It is characterized by renal fibrosis, which is strongly correlated with impairment of renal function. Since renal biopsy is not performed routinely in clinical practice, the non-invasive method of ultrasonographic shear-wave elastography (SWE) was used to determine renal parenchymal stiffness. Currently, urinary procollagen type III amino-terminal propeptide (uPIIINP) is a renal fibrosis biomarker in humans...
February 11, 2019: BMC Veterinary Research
Hwaseong Ryu, Su Joa Ahn, Jeong Hee Yoon, Jeong Min Lee
PURPOSE: The purpose of this study was to retrospectively compare the technical success and reliability of the measurements made using two 2-dimensional (2D) shear wave elastography (SWE) systems using the comb-push technique from the same manufacturer and to assess the intersystem reproducibility of the resultant liver stiffness (LS) measurements. METHODS: Ninety-four patients with suspected chronic liver diseases were included in this retrospective study. LS measurements were obtained using two 2D-SWE systems (LOGIQ E9 and LOGIQ S8) from the same manufacturer, with transient elastography (TE) serving as the reference standard, on the same day...
November 23, 2018: Ultrasonography
Miguel Bernal, Indrani Sen, Matthew W Urban
Cardiovascular disease is the leading cause of mortality in the United States. Peripheral artery disease (PAD) affects a substantial portion of the elderly population (> 70 years). PAD can be symptomatic or asymptomatic, and treatment is directed towards improving functional vessel patency and limb salvage. Revascularization surgical treatments are needed in some cases, and it is not always possible to use autologous veins for vascular grafting. In this case, synthetic materials may be used. Synthetic materials such as expanded polytetrafluoroethylene (ePTFE) and poly (ethylene terephthalate) (Dacron) have been used...
February 8, 2019: Physics in Medicine and Biology
Yoshihiro Sowa, Isao Yokota, Kei Fujikawa, Daiki Morita, Tetsuya Taguchi, Toshiaki Numajiri
Problems in breast reconstruction with deep inferior epigastric perforator (DIEP) flaps include postoperative fat induration and necrosis. A resulting clinical symptom is palpable indurated tissue, but it is difficult to measure the stiffness of transplanted fat tissues objectively at a deep site. The ability to perform shear-wave elastography (SWE) was recently added to some common ultrasonic echo devices, enabling objective three-dimensional measurements of tissue stiffness. In this study, we measured the stiffness of transplanted DIEP flaps using SWE to examine the effects of measurement sites, flap size and perforator patterns on stiffness...
February 8, 2019: Journal of Plastic Surgery and Hand Surgery
Ayse Selcan Koç, Hilmi Erdem Sumbul
Patients with type 2 diabetes mellitus (DM) have been shown to have increased liver fibrosis (LF) as determined by liver elastography. However, the data on LF incidence in patients with prediabetes are scarce. This study was undertaken to determine the incidence of LF and associated parameters in prediabetic patients. Three study groups with equal number of participants defined on the basis of glucose metabolism status were included the following: normal glucose metabolism (NGM), prediabetes, and newly diagnosed type 2 DM (55 patients in each group)...
February 4, 2019: Ultrasound Quarterly
Hasan Erdogan, Mehmet Sedat Durmaz, Serdar Arslan, Funda Gokgoz Durmaz, Hakan Cebeci, Osman Ergun, Seda Sogukpinar Karaagac
We aimed to determine histological damage in patients with varicocele by comparing the elasticity of their affected testes with that of their normal contralateral testes as well as normal testes of control subjects without varicocele using shear wave elastography (SWE). In total, 48 patients with varicocele (96 testes) and 52 control subjects (104 testes) were included in this study. Shear wave elastography values were measured in the longitudinal plane using an oval region of interest that covered as much of the testicular contours as possible...
February 4, 2019: Ultrasound Quarterly
Mesut Ozgokce, Fatma Durmaz, Alpaslan Yavuz, İbrahim Üney, Hanifi Yildiz, Harun Arslan, Ilyas Dundar, Nuri Havan, Hayri Ogul
The aim of the study was to investigate the efficacy of shear-wave elastography (SWE) in the differentiation of transudative and exudative pleural effusions. This monocentric study comprised 60 cases (17 transudative, 43 exudative).Transthoracic SWE was performed in 60 cases for whom to use thoracentesis for the pleural fluid analysis was planned. The mean SWE values of each patient were recorded, and the correlation between the biochemical analysis results of pleural fluid after thoracentesis and SWE findings was evaluated...
February 4, 2019: Ultrasound Quarterly
Emine Uysal, Mehmet Öztürk
The local shear wave speed (in meters per second) and Young modulus (in kilopascals) of normal thyroid glands were defined in healthy children to determine reference values.This prospective study assessed 107 pediatric cases (age interval, 3-17 years; mean, 9.37 ± 3.68 years), including 52 boys and 55 girls. The study group included children without thyroid gland disease (autoimmune, infectious, or neoplastic). Data about the sex, age, weight, height, and body mass index (BMI) of the subjects were recorded for all subjects...
February 4, 2019: Ultrasound Quarterly
Shujun Xia, Xinping Ren, Zhongxin Ni, Weiwei Zhan
The aim of our study was to investigate the efficiency and feasibility of shear-wave elastography (sound touch elastography [STE], sound touch quantification [STQ]) compared with transient elastography (FibroScan) assessment in noninvasively and quantitatively identifying the degree of liver fibrosis. A total of 158 patients with chronic hepatitis B were included, and all accepted STE, STQ, and FibroScan assessments. Young's modulus (kPa) of STE, STQ, and FibroScan were evaluated, and the diagnostic performance of the 3 techniques on liver fibrosis stage was compared...
February 4, 2019: Ultrasound Quarterly
Atul N Ingle, Tomy Varghese
Three-dimensional visualization of tumor ablation procedures have significant clinical value because the ability to accurately visualize ablated volumes can help clinicians gauge the extent of ablated tissue necrosis and plan future treatment steps. Better control over ablation volume can prevent recurrence of tumors treated using ablative procedures. This paper presents a kernel based smoothing algorithm called MatérnSmooth to reconstruct shear wave velocity maps from data acquired through ultrasound electrode vibration elastography...
December 14, 2018: Ultrasonics
Shane L Koppenhaver, Dominique Scutella, Brooke A Sorrell, Joshua Yahalom, Cesar Fernández-de-Las-Peñas, John D Childs, Scott W Shaffer, Minoru Shinohara
BACKGROUND: Quantifying stiffness of the lumbar spine musculature using shear-wave elastography (SWE) maybe beneficial in the diagnosis and treatment of non-specific low back pain (LBP). The primary purpose of this study was to establish normative parameter and variance estimates of lumbar spine muscle stiffness at rest and during submaximal contraction levels using SWE in healthy individuals. A second aim was to determine the relationship between lumbar spine muscle stiffness and a variety of demographic, anthropometric, and medical history variables...
January 30, 2019: Clinical Biomechanics
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