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Acoustic radiation force impulse

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https://www.readbyqxmd.com/read/28527203/value-of-different-ultrasound-elastography-techniques-in-patients-with-venous-malformations-prior-to-and-after-sclerotherapy
#1
V I Teusch, A P Piehler, W Uller, R Müller-Wille, L Prantl, C Stroszczynski, W A Wohlgemuth, E M Jung
AIM: Comparison of different ultrasound elastography techniques for detection of changes after sclerotherapy within venous malformations. MATERIAL AND METHODS: In patients with venous malformations sonography was executed at exactly the same position prior to and after ethanol-gel sclerotherapy. Both examinations included B-Mode, vascular sonography with Color-Coded Duplex Sonography, and additional sonography with different elastography techniques (strain, qualitative and quantitative Acoustic Radiation Force Impulse (ARFI) elastography) with a linear transducer (6-9 MHz)...
May 19, 2017: Clinical Hemorheology and Microcirculation
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
#2
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/28513280/application-of-acoustic-radiation-force-impulse-arfi-elastography-in-imaging-of-delayed-onset-muscle-soreness-doms-a-comparative-analysis-with-3t-mri
#3
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/28503746/application-of-ultrasound-elastography-for-chronic-allograft-dysfunction-in-kidney-transplantation
#4
REVIEW
Zijie Wang, Haiwei Yang, Chuanjian Suo, Jifu Wei, Ruoyun Tan, Min Gu
Interstitial fibrosis is the main characteristic of chronic allograft dysfunction, which remains the key factor affecting long-term allograft survival after kidney transplantation. Ultrasound elastography (UE), including real-time elastography, transient elastography, and acoustic radiation force impulse, has been applied widely in breast, thyroid, and liver diseases, especially in the assessment of liver fibrosis. Recently, numerous studies have reported the efficacy of UE methods in evaluating renal allograft fibrosis...
May 15, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28492613/erratum-correction-to-hu-x-et-al-acoustic-radiation-force-impulse-arfi-elastography-for-non%C3%A2-invasive-evaluation-of-hepatic-fibrosis-in-chronic-hepatitis-b-and-c-patients-a-systematic-review-and-meta-analysis-med-ultrason-2017-19-1-23-3
#5
(no author information available yet)
The authors have been made aware of the errors that appeared at Corresponding author: correct phone number 86-10-63138297 and correct email qianlinxue2002@163.com, and also at acknowledgements: correct grant no. 2014-3-009.
June 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28475023/acoustic-radiation-force-impulse-imaging-for-detection-of-liver-fibrosis-in-overweight-and-obese-children
#6
Juan D Berná-Serna, Regina Sánchez-Jiménez, Francisca Velázquez-Marín, Pilar Sainz de Baranda, Florentina Guzmán-Aroca, Carmen Fernández-Hernández, Ernesto Doménech-Abellán, Dolores Abellán-Rivero, Guadalupe Ruiz-Merino, Juan Madrid-Conesa, Manuel Canteras-Jordana
Background Acoustic radiation force impulse (ARFI) is a non-invasive alternative to a liver biopsy for the evaluation of liver fibrosis (LF). Purpose To investigate the potential usefulness of acoustic radiation force impulse ARFI for detecting LF in overweight and obese children Material and Methods A cross-sectional study was conducted in 148 schoolchildren. A diagnosis of non-alcoholic fatty liver disease (NAFLD) and LF was based on ultrasound (US) and ARFI shear wave velocity (SWV). Results The laboratory parameters were normal in all the children...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28473066/acr-appropriateness-criteria-%C3%A2-chronic-liver%C3%A2-disease
#7
Jeanne M Horowitz, Ihab R Kamel, Hina Arif-Tiwari, Sumeet K Asrani, Nicole M Hindman, Harmeet Kaur, Michelle M McNamara, Richard B Noto, Aliya Qayyum, Tasneem Lalani
Because liver fibrosis can be treated, it is important to diagnose liver fibrosis noninvasively and monitor response to treatment. Although ultrasound (grayscale and Doppler) can diagnose cirrhosis, it does so unreliably using morphologic and sonographic features and cannot diagnose the earlier, treatable stages of hepatic fibrosis. Transient elastography, ultrasound elastography with acoustic radiation force impulse, and MR elastography are modalities that can assess for hepatic fibrosis. Although all international organizations recommend ultrasound for screening for hepatocellular carcinoma, ultrasound is particularly limited for identifying hepatocellular carcinoma in patients with obesity, nonalcoholic fatty liver disease, and nodular cirrhotic livers...
May 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28471833/acoustic-radiation-force-impulse-in-the-diagnosis-of-liver-fibrosis-in-patients-with-chronic-hepatitis-b
#8
Rui Huang, Juan Xia, Yong Liu, Zhaoping Zhang, Chao Wu
No abstract text is available yet for this article.
May 3, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28471822/assessment-of-liver-fibrosis-with-acoustic-radiation-force-impulse-imaging-versus-liver-histology-in-patients-with-chronic-hepatitis-c-a-pilot-study
#9
Mohamed A S Kohla, Mohamed Abbasy, Mai Abozeid, Osama El-Abd, Sameera Ezzat, Samah Kohla, Mohamed Abdel-Rahman
BACKGROUND: Acoustic radiation force impulse imaging (ARFI) involves the mechanical excitation of tissues using short-duration acoustic pulses to generate localized displacements in tissue. The displacements results in shear-wave propagation, tracked by ultrasonography (US) correlation-based methods and recorded in meters per seconds. AIM: To compare (ARFI) integrated into a conventional US with the standard histological examination of liver biopsy specimens for the assessment of liver fibrosis...
May 3, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28471058/quantitative-analysis-of-hepatic-toxicity-in-rats-induced-by-inhalable-silica-nanoparticles-using-acoustic-radiation-force-imaging
#10
Wen Cao, Yajing Zhou, Yingmei Niu, Xiaoli Zhu, Yuguo Song, Ruijun Guo
OBJECTIVES: The purposes of this study were to verify whether inhalable silicon dioxide (SiO2 ) nanoparticles could induce hepatic injury and to investigate the relationship between the exposure time and SiO2 nanoparticle dosage by using acoustic radiation force impulse imaging (ARFI). METHODS: A total of 72 rats were randomly separated into 9 groups with 8 in each: blank control group, 0.9% normal saline group, polyacrylate (PPE) group, 25%, 50%, and 100% SiO2 groups, and 25%, 50%, and 100% SiO2 /PPE groups with inhaled SiO2 nanoparticle concentrations similar to the SiO2 groups...
May 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28468574/diagnostic-value-of-acoustic-radiation-force-impulse-quantification-in-the-differentiation-of-benign-and-malignant-thyroid-nodules
#11
Niraj Nirmal Pandey, Gaurav Shanker Pradhan, Alpana Manchanda, Anju Garg
The objective of this study was to evaluate the role of ultrasound elastography using acoustic radiation force impulse (ARFI) quantification in characterizing and differentiating malignant versus benign thyroid nodules. A total of 40 thyroid nodules were evaluated with conventional sonography and ultrasound elastography using ARFI quantification. The final diagnosis was obtained from histologic findings. A total of 14 malignant and 26 benign nodules were diagnosed on the basis of histologic examination. Majority of the malignant thyroid nodules demonstrated presence of intranodular vascular flow, hypoechoic echotexture, absent halo, irregular margins and microcalcifications...
May 1, 2017: Ultrasonic Imaging
https://www.readbyqxmd.com/read/28458448/evaluating-the-improvement-in-shear-wave-speed-image-quality-using-multidimensional-directional-filters-in-the-presence-of-reflection-artifacts
#12
Samantha L Lipman, Ned C Rouze, Mark L Palmeri, Kathryn R Nightingale
Shear waves propagating through interfaces where there is a change in stiffness cause reflected waves that can lead to artifacts in shear wave speed (SWS) reconstructions. Two-dimensional (2-D) directional filters are commonly used to reduce in-plane reflected waves; however, SWS artifacts arise from both in- and out-of-imaging-plane reflected waves. Herein, we introduce 3-D shear wave reconstruction methods as an extension of the previous 2-D estimation methods and quantify the reduction in image artifacts through the use of volumetric SWS monitoring and 4-D-directional filters...
August 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28450709/multi-functional-ultrasonic-micro-elastography-imaging-system
#13
Xuejun Qian, Teng Ma, Mingyue Yu, Xiaoyang Chen, K Kirk Shung, Qifa Zhou
In clinical decision making, in addition to anatomical information, biomechanical properties of soft tissues may provide additional clues for disease diagnosis. Given the fact that most of diseases are originated from micron sized structures, an elastography imaging system of fine resolution (~100 µm) and deep penetration depth capable of providing both qualitative and quantitative measurements of biomechanical properties is desired. Here, we report a newly developed multi-functional ultrasonic micro-elastography imaging system in which acoustic radiation force impulse imaging (ARFI) and shear wave elasticity imaging (SWEI) are implemented...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28440353/the-safety-and-feasibility-of-diagnostic-acoustic-radiation-force-impulse-elastography-used-for-eyes-a-preliminary-in-vivo-study
#14
Li Zha, Ke Qi Chen, Xiao Zhi Zheng, Jing Wu
AIMS: To assess the safety and feasibility of acoustic radiation force impulse (ARFI) elastography in the eyes of rats. Material and methods: One hundred and twenty-six SD rats were divided into 7 groups. Group 1 was the control group and Group 2 to Group 7 were investigated by ARFI elastography using increased powers of 5%, 10%, 20%, 50%, and 100% and repetitions of 5 or 10. The changes of ocular architecture structures and functions were examined by phthalmoscopic, histopathologic, and light reflex examination, and the expression level of IL-6, IL-8, and TNF-α was determined in days 1, 3, and 7 after ARFI elastography, respectively...
April 22, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28433441/role-of-contrast-enhanced-ultrasound-in-diagnosis-of-thyroid-nodules-in-acoustic-radiation-force-impulse-gray-zone
#15
Jia Zhan, Xue-Hong Diao, Lin Chen, Jia-Mei Jin, Yue Chen
The aim of this study was to evaluate the clinical value of contrast-enhanced ultrasound (CEUS) in the diagnosis of thyroid nodules in the acoustic radiation force impulse (ARFI) "gray zone" (the shear wave velocity is in the range 2.5-3 m/s). ARFI was performed before thyroidectomy in 70 patients with 200 thyroid nodules, and then CEUS was performed in 40 thyroid nodules in the "gray zone." The accuracy of ARFI for the 200 thyroid nodules was 82% (164/200). The accuracy of ARFI for the 40 "gray zone" thyroid nodules was 70% (28/40), whereas the accuracy of CEUS for the "gray zone" thyroid nodules was 90% (36/40)...
June 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28424923/shear-wave-velocity-of-the-healthy-thyroid-gland-in-children-with-acoustic-radiation-force-impulse-elastography
#16
Meltem Ceyhan Bilgici, Dilek Sağlam, Semra Delibalta, Serap Yücel, Leman Tomak, Muzaffer Elmalı
PURPOSE: Acoustic radiation force impulse imaging is a kind of shear wave elastography that can be used in children for differentiating thyroid pathologies. Possible changes in the healthy thyroid gland in children may create difficulties in the use of shear wave velocities (SWV) in thyroid pathologies. The aim of this study was to define the normal values of SWV for the healthy thyroid gland in children, elucidate the correlation of the SWV values with potential influencing factors, and evaluate intra-operator reproducibility of the SWV...
April 19, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28421350/preoperative-imaging-evaluation-of-pancreatic-pathologies-for-the-objective-prediction-of-pancreatic-fistula-after-pancreaticoduodenectomy
#17
REVIEW
Yoshitsugu Tajima, Yasunari Kawabata, Noriyuki Hirahara
In performing pancreaticoduodenectomy (PD) or when conducting clinical trials involving PD procedure, a universal platform for predicting the risk of postoperative pancreatic fistula (POPF) is indispensable. In this article, the most significant imaging studies that focused on the objective preoperative assessment of pancreatic pathologies in association with the occurrence of POPF after PD were reviewed. Several recently developed imaging modalities can objectively predict the occurrence of POPF after PD by assessing the elasticity, fibrosis, and fatty infiltration of the pancreas...
April 18, 2017: Surgery Today
https://www.readbyqxmd.com/read/28407283/acoustic-radiation-force-impulse-imaging-for-assessing-liver-fibrosis-preoperatively-in-infants-with-biliary-atresia-comparison-with-liver-fibrosis-biopsy-pathology
#18
Fen Gao, Ya-Qing Chen, Jing Fang, Sheng-Li Gu, Luan Li, Xiao-Ying Wang
OBJECTIVES: The purpose of this study was to investigate the diagnostic performance of acoustic radiation force impulse (ARFI) in assessing liver fibrosis preoperatively in infants with biliary atresia (BA). METHODS: A total of 50 consecutive infants with BA and 50 healthy infants who underwent ARFI examination were recruited. Siemens Acuson S2000 in Virtual Touch Quantification mode (Siemens Medical Solutions, Mountain View, CA) was used to measure shear wave speeds (SWSs)...
April 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28407281/multiparametric-quantitative-ultrasound-imaging-in-assessment-of-chronic-kidney-disease
#19
Jing Gao, Alan Perlman, Safa Kalache, Nathaniel Berman, Surya Seshan, Steven Salvatore, Lindsey Smith, Natasha Wehrli, Levi Waldron, Hanish Kodali, James Chevalier
OBJECTIVES: To evaluate the value of multiparametric quantitative ultrasound imaging in assessing chronic kidney disease (CKD) using kidney biopsy pathologic findings as reference standards. METHODS: We prospectively measured multiparametric quantitative ultrasound markers with grayscale, spectral Doppler, and acoustic radiation force impulse imaging in 25 patients with CKD before kidney biopsy and 10 healthy volunteers. Based on all pathologic (glomerulosclerosis, interstitial fibrosis/tubular atrophy, arteriosclerosis, and edema) scores, the patients with CKD were classified into mild (no grade 3 and <2 of grade 2) and moderate to severe (at least 2 of grade 2 or 1 of grade 3) CKD groups...
April 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28390141/acoustic-radiation-force-impulse-quantification-in-the-evaluation-of-renal-parenchyma-elasticity-in-pediatric-patients-with-chronic-kidney-disease-preliminary-results
#20
Meltem Ceyhan Bilgici, Tumay Bekci, Gurkan Genc, Demet Tekcan, Leman Tomak
OBJECTIVES: To evaluate renal parenchymal elasticity with acoustic radiation force impulse imaging in pediatric patients with chronic kidney disease (CKD) and compare with healthy volunteers. METHODS: Thirty-eight healthy volunteers and 30 pediatric CKD patients were enrolled in this prospective study. The shear wave velocity (SW) values of both kidneys in CKD patients and healthy volunteers were evaluated. RESULTS: The mean SW in healthy volunteers was 2...
April 8, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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