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ultrasound elastography

M Issaoui, A Debost-Legrand, K Skerl, B Chauveau, B Magnin, A Delabaere, L Boyer, M-P Sauvant-Rochat, D Lémery
PURPOSE: To identify the effects of shear wave elastography in the fetus for evaluation in widespread use. MATERIALS AND METHODS: The Health Risk Assessment method proposed by the National Research Council was used with literature to evaluate the safety of shear wave elastography for the fetus regarding its potential effects in human tissues. RESULTS: The experimental and epidemiologic data from 25 articles showed that shear wave elastography maintained the same thermal effect as pulsed Doppler ultrasound already authorized in obstetrics, and that cavitation effect on fetal tissue is improbable...
June 19, 2018: Diagnostic and Interventional Imaging
Müberra Pehlivan, Melek Kezban Gurbuz, Cemal Cingi, Baki Adapinar, A Nevbahar Değirmenci, F Mustafa Acikalin, Mehmet Özgür Pinarbaşli, Ertugrul Colak
INTRODUCTION: Ultrasonography is the easiest non-invasive method to diagnose lymph node metastases in patients with head and neck cancer. However, since CT scans are often preferred in the evaluation of primary tumours of these patients, information about lymphatic metastases may also available in these patients. Therefore, ultrasound is not routinely employed in the evaluation of these patients. However, elastography technique, a recent development in ultrasound technology, could make use of ultrasonography in these patients even more widespread, even though it is still not widely used today...
February 16, 2018: Brazilian Journal of Otorhinolaryngology
Suzanne Davison
Liver disease in cystic fibrosis has many causes, with biliary fibrosis due to abnormal CFTR protein predominating. Assessment requires aetiology to be defined. Biliary fibrosis may progress to cirrhosis and portal hypertension, which although initially asymptomatic, may cause varices and splenomegaly. Monitoring progression includes clinical and ultrasound assessment with endoscopic assessment of varices for those at risk. Extrapolated primarily from longitudinal assessment of viral hepatitis in adults, non-invasive elastography has a potential role...
May 18, 2018: Paediatric Respiratory Reviews
Tongtong Liu, Xifeng Ge, Jinhua Yu, Yi Guo, Yuanyuan Wang, Wenping Wang, Ligang Cui
PURPOSE: B-mode ultrasound (B-US) and strain elastography ultrasound (SE-US) images have a potential to distinguish thyroid tumor with different lymph node (LN) status. The purpose of our study is to investigate whether the application of multi-modality images including B-US and SE-US can improve the discriminability of thyroid tumor with LN metastasis based on a radiomics approach. METHODS: Ultrasound (US) images including B-US and SE-US images of 75 papillary thyroid carcinoma (PTC) cases were retrospectively collected...
June 21, 2018: International Journal of Computer Assisted Radiology and Surgery
Sheliza Halani, F Stuart Foster, Maksym Breslavets, Neil H Shear
Non-invasive bedside imaging tools are becoming more prevalent for assessing cutaneous lesions. Ultrasound used at specific frequencies allows us to assess margins of lesions to minimize the extent of the biopsy that is performed and improve cosmetic outcomes. Vascularity, seen on Doppler ultrasound and contrast-enhanced ultrasound, and stiffness, assessed on tissue elastography, can help differentiate between benign and malignant lesions for clinicians to be more judicious in deciding whether to biopsy. Moreover, research has shown the efficacy in using ultrasound in monitoring flares of hidradenitis suppurativa, a disease affecting apocrine gland-rich areas of the body, for which the current gold standard involves examining and scoring inflammatory lesions with the naked eye...
2018: Frontiers in Medicine
Jeong-Min Lee, Jae-Yeon Hwang, Jihyun Bae, Mae Ran Kim, Yong-Woo Kim, Su Eun Park, Jeong A Yeom, Jieun Roh
Purpose: This study evaluated the feasibility of acoustic radiation force impulse (ARFI) elastography and characterized the sonographic features of lymph nodes (LNs) with Kikuchi disease in pediatric patients. Methods: Seventy-six cervical LN biopsies were performed for the diagnosis of cervical lymphadenopathy. ARFI imaging was performed, and the characteristic ultrasound features of the biopsied LNs and the contralateral LNs were analyzed. We also reviewed clinical and conventional ultrasonographic findings...
April 24, 2018: Ultrasonography
Han-Yu Jiang, Jie Chen, Chun-Chao Xia, Li-Kun Cao, Ting Duan, Bin Song
Hepatocellular carcinoma (HCC) is the most common primary liver cancer and a major public health problem worldwide. Hepatocarcinogenesis is a complex multistep process at molecular, cellular, and histologic levels with key alterations that can be revealed by noninvasive imaging modalities. Therefore, imaging techniques play pivotal roles in the detection, characterization, staging, surveillance, and prognosis evaluation of HCC. Currently, ultrasound is the first-line imaging modality for screening and surveillance purposes...
June 14, 2018: World Journal of Gastroenterology: WJG
Gordon P Watt, Miryoung Lee, Jen-Jung Pan, Michael B Fallon, Rohit Loomba, Laura Beretta, Joseph B McCormick, Susan P Fisher-Hoch
BACKGROUND & AIMS: Hepatic fibrosis is a primary risk factor for cirrhosis and hepatocellular carcinoma, which affect a disproportionate number of Hispanics in the United States. We aimed to determine the prevalence of significant fibrosis, measured by point shear-wave elastography (pSWE), and determine characteristics of hepatic fibrosis and simple steatosis in a population-based study of Mexican American Hispanics in south Texas. METHODS: Liver stiffness was measured by pSWE, performed by 2 separate operators, for 406 participants in the Cameron County Hispanic Cohort from 2015 through 2017...
June 11, 2018: Clinical Gastroenterology and Hepatology
Yu Yu Vinnik, A V Andreichikov, N Yu Klimov
This literature review outlines the most common methods of diagnosis of benign prostatic hyperplasia. Promising diagnostic modalities include uroflowmetry, assessment of International Prostate Symptom Score (IPSS), transrectal ultrasound and prostate elastography. The authors address social implications and epidemiological features of the disease in Russia and developed countries.
May 2018: Urologii︠a︡
Xinyu Zhang, Qingmin Wang, Zhen Lyu, Xuehua Gao, Pengpeng Zhang, Haoming Lin, Yanrong Guo, Tianfu Wang, Siping Chen, Xin Chen
BACKGROUND: The pathological or physiological changes of a crystalline lens directly affect the eye accommodation and transmittance, and then they increase the risk of presbyopia and cataracts for people in the middle and old age groups. There is no universally accepted quantitative method to measure the lens' mechanical properties in vivo so far. This study aims to investigate the possibility of assessing the age-related stiffness change of crystalline lens by acoustic-radiation-force-based ultrasound elastography (ARF-USE) in a rabbit model in vivo...
June 13, 2018: Biomedical Engineering Online
Ying Chang, Jingchun Yang, Hua Hong, Huijuan Ma, Xin Cui, Li Chen
To evaluate the performance of a combination of real-time strain elastography (RTSE) and contrast-enhanced transrectal ultrasound (CETRUS) for prostate cancer detection. Patients with serum prostate-specific antigen (PSA) levels of ≥4.0 ng/ml were prospectively enrolled between June 2014 and December 2016. 153 prostate nodules diagnosed by conventional ultrasound were prospectively enrolled and examined by CETRUS and RTSE before a biopsy. Multivariate logistic regression models were established for CETRUS, and CETRUS combined with RTSE to diagnose prostate malignancy...
June 2018: Aging and Disease
Rafael Heiss, Marion Kellermann, Bernd Swoboda, Casper Grim, Matthias S May, Wolfgang Wuest, Michael Uder, Armin M Nagel, Thilo Hotfiel
Study Design Controlled laboratory study with repeated measures. Background Delayed-onset muscle soreness (DOMS) is one of the most common reasons for impaired muscle performance in sports. However, little consensus exists regarding which treatments may be most effective and the underlying mechanisms are poorly understood. Objectives To investigate the influence of compression garments on the development of DOMS, focusing on changes in muscle perfusion and muscle stiffness. Methods Muscle perfusion and stiffness, calf circumference, muscle soreness, passive ankle dorsiflexion, and creatine kinase levels were assessed on participants before (baseline) a DOMS-inducing eccentric calf exercise intervention and 60 h later (follow-up)...
June 12, 2018: Journal of Orthopaedic and Sports Physical Therapy
Sehnaz Tezcan, Funda Ulu Ozturk, Nihal Uslu, Merve Nalbant, Oya Umit Yemisci
OBJECTIVES: To evaluate the efficacy of low-level laser therapy on median nerve stiffness by using strain elastography in carpal tunnel syndrome (CTS). METHODS: This study included 37 wrists of 34 patients with mild or moderate CTS between January 2016 and August 2016. The control group comprised 17 patients (18 wrists) with CTS who were treated with wrist splinting for 3 weeks. The low-level laser therapy group included 17 patients (19 wrists) with CTS who were treated with a combination of splinting and low-level laser therapy, which was applied 5 times per week for 3 weeks...
June 11, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Thilo Hotfiel, Rafael Heiss, Rolf Janka, Raimund Forst, Martine Raithel, Christoph Lutter, Kolja Gelse, Milena Pachowsky, Tobias Golditz
OBJECTIVES: The anterior talofibular ligament (ATFL) is the most frequently injured ligament during inversion strains of the ankle. The purpose of this study was to evaluate the feasibility of acoustic radiation force impulse (ARFI) elastography and to determine the in vivo mechanical properties of the ATFL in healthy athletes. METHODS: Fifty-one healthy athletes (32 female, 28 male; 29 ±2 years) were recruited from the medical and sports faculty. ARFI values, represented as shear wave velocities (SWV) as well as conventional ultrasound were obtained for the ATFL in neutral ankle position...
June 9, 2018: Physician and Sportsmedicine
Eugen Lungu, Philippe Grondin, Patrice Tétreault, François Desmeules, Guy Cloutier, Manon Choinière, Nathalie J Bureau
INTRODUCTION: Chronic lateral epicondylosis (CLE) of the elbow is a prevalent condition among middle-aged people with no consensus on optimal care management but for which surgery is generally accepted as a second intention treatment. Among conservative treatment options, ultrasound (US)-guided fenestration has shown encouraging results that should be explored before surgery is considered. The primary objective of this study is to compare the efficacy of US-guided fenestration with open-release surgery in patients with failure to improve following a minimum 6 months of conservative treatment...
June 9, 2018: BMJ Open
Torsten Kucharzik, Christian Maaser
As Crohn's disease (CD) is predominantly located within the small bowel, imaging of the small bowel plays an intriguing role in the primary diagnosis as well as in the monitoring of patients with CD. Intestinal ultrasound (IUS) offers several advantages over endoscopy and other imaging modalities. Obvious advantages of IUS include noninvasiveness, rapid availability and cost effectiveness. IUS has been shown to have high accuracy in detecting small bowel CD and determining intra- and extramural complications such as stenoses, fistulae and abscesses...
2018: Therapeutic Advances in Gastroenterology
Boran Zhou, Xiaoming Zhang
The purpose of this study is to compare five viscoelastic models (Voigt, Maxwell, standard linear solid, spring-pot, and fractional Voigt models) for estimating viscoelastic properties based on ultrasound shear wave elastography measurements. We performed the forward problem analysis, the inverse problem analysis, and experiments. In the forward problem analysis, the shear wave speeds at different frequencies were calculated using the Voigt model for given shear elasticity and varying shear viscosity. In the inverse problem analysis, the viscoelastic parameters were estimated from the given wave speeds for the five viscoelastic models using the least-square regression...
May 30, 2018: Journal of the Mechanical Behavior of Biomedical Materials
Ryan Clay, Brian J Bartholmai, Boran Zhou, Ronald Karwoski, Tobias Peikert, Thomas Osborn, Srinivasan Rajagopalan, Sanjay Kalra, Xiaoming Zhang
PURPOSE: Optimal strategies to detect early interstitial lung disease (ILD) are unknown. ILD is frequently subpleural in distribution and affects lung elasticity. Lung ultrasound surface wave elastography (LUSWE) is a noninvasive method of quantifying superficial lung tissue elastic properties. In LUWSE a handheld device applied at the intercostal space vibrates the chest at a set frequency, and the lung surface wave velocity is measured by an ultrasound probe 5 mm away in the same intercostal space...
June 5, 2018: Journal of Thoracic Imaging
Luca Maria Sconfienza, Domenico Albano, Georgina Allen, Alberto Bazzocchi, Bianca Bignotti, Vito Chianca, Fernando Facal de Castro, Elena E Drakonaki, Elena Gallardo, Jan Gielen, Andrea Sabine Klauser, Carlo Martinoli, Giovanni Mauri, Eugene McNally, Carmelo Messina, Rebeca Mirón Mombiela, Davide Orlandi, Athena Plagou, Magdalena Posadzy, Rosa de la Puente, Monique Reijnierse, Federica Rossi, Saulius Rutkauskas, Ziga Snoj, Jelena Vucetic, David Wilson, Alberto Stefano Tagliafico
OBJECTIVES: To update the 2012 European Society of Musculoskeletal Radiology (ESSR) clinical consensus guidelines for musculoskeletal ultrasound referral in Europe. METHODS: Twenty-one musculoskeletal imaging experts from the ESSR participated in a consensus study based on a Delphic process. Two independent (non-voting) authors facilitated the procedure and resolved doubtful issues. Updated musculoskeletal ultrasound literature up to July 2017 was scored for shoulder, elbow, wrist/hand, hip, knee, and ankle/foot...
June 6, 2018: European Radiology
Claudio Tana, Cosima Schiavone, Andrea Ticinesi, Fulvio Lauretani, Antonio Nouvenne, Christoph Frank Dietrich, Tiziana Meschi
Ultrasound (US) can reveal the presence of steatosis in non-alcoholic fatty liver disease (NAFLD), but its diagnostic accuracy to reveal signs of fibrosis is low except in advanced stages of disease (e.g. cirrhosis). Current guidelines suggest the use of clinical algorithms, such as the NAFLD fibrosis score, and elastography to predict the progression of fibrosis, and the integration of elastography improves the detection accuracy of liver stiffness. However, there is a lack of evidence about the correlation between clinical algorithms and conventional US, and elastography is limited by the relative low diffusion, necessity of training, and loss of diagnostic accuracy in patients with high body mass index (BMI), waist circumference, or increased thickness of parietal walls, with consequent significant rates of failure of measurement of liver stiffness...
January 2018: International Journal of Immunopathology and Pharmacology
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