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Elastography ARFI

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https://www.readbyqxmd.com/read/27906671/risk-stratification-of-thyroid-nodules-with-bethesda-category-iii-results-on-fine-needle-aspiration-cytology-the-additional-value-of-acoustic-radiation-force-impulse-elastography
#1
Chong-Ke Zhao, Hui-Xiong Xu, Jun-Mei Xu, Cheng-Yu Sun, Wei Chen, Bo-Ji Liu, Xiao-Wan Bo, Dan Wang, Shen Qu
To assess the value of conventional ultrasound, conventional strain elastography (CSE) and acoustic radiation force impulse (ARFI) elastography in differentiating likelihood of malignancy for Bethesda category III thyroid nodules. 103 thyroid nodules with Bethesda category III results on fine-needle aspiration cytology (FNAC) in 103 patients were included and all were pathologically confirmed after surgery. Conventional ultrasound, CSE and ARFI elastography including ARFI imaging and point shear wave speed (SWS) measurement were performed...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27876713/role-of-acoustic-radiation-force-impulse-arfi-elastography-in-determination-of-severity-of-benign-prostate-hyperplasia
#2
Bircan Alan, Mazhar Utangaç, Cemil Göya, Mansur Dağgülli
BACKGROUND The aim of this study was to investigate the potential contribution of acoustic radiation force impulse (ARFI) elastography to the determination of the severity of benign prostate hypertrophy (BPH) by performing shear wave velocity (SWV) measurements of the prostate using ARFI technology. MATERIAL AND METHODS Sixty BPH patients and 40 healthy volunteers were included in this study. SWV measurements of the prostate were performed by transabdominal ultrasonography (US), both in the BPH patients and control subjects...
November 23, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27872416/initial-experience-with-ultrasound-elastography-for-diagnosis-of-major-salivary-gland-lesions
#3
Hang Zhou, Xian-Li Zhou, Hui-Xiong Xu, Ya-Ping He, Xiao-Wan Bo, Xiao-Long Li, Bo-Ji Liu, Dan-Dan Li, Dan Wang
OBJECTIVES: The aim of this study was to evaluate the usefulness of ultrasound elastography, including conventional strain elastography, acoustic radiation force impulse (ARFI)-induced strain elastography, and point shear wave elastography (SWE) for diagnosis of major salivary gland lesions. METHODS: Forty major salivary gland lesions underwent conventional sonography, conventional strain elastography, ARFI strain elastography, and point SWE before surgery or biopsy...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27845658/shear-wave-imaging-of-in-vivo-breast-tissue-by-color-doppler-shear-wave-elastography
#4
Yoshiki Yamakoshi, Takahito Nakajima, Toshihiro Kasahara, Mayuko Yamazaki, Ren Koda, Naoki Sunaguchi
Shear wave elastography is a distinctive method to access the viscoelastic characteristic of the soft tissue that is difficult to obtain by other imaging modalities. This paper proposes a novel shear wave elastography (color Doppler shear wave imaging: CD SWI) for breast tissue. Continuous shear wave is produced by a small lightweight actuator which is attached to the tissue surface. Shear wave wavefront which propagates in tissue is reconstructed as a binary pattern which consists of zero and the maximum flow velocities on color flow image (CFI)...
November 8, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27842669/acoustic-radiation-force-impulse-shear-wave-elastography-arfi-of-acute-and-chronic-pancreatitis-and-pancreatic-tumor
#5
Ruediger S Goertz, Johanna Schuderer, Deike Strobel, Lukas Pfeifer, Markus F Neurath, Dane Wildner
INTRODUCTION: Acoustic Radiation Force Impulse (ARFI) elastography evaluates tissue stiffness non-invasively and has rarely been applied to pancreas examinations so far. In a prospective and retrospective analysis, ARFI shear wave velocities of healthy parenchyma, pancreatic lipomatosis, acute and chronic pancreatitis, adenocarcinoma and neuroendocrine tumor (NET) of the pancreas were evaluated and compared. MATERIAL AND METHODS: In 95 patients ARFI elastography of the pancreatic head, and also of the tail for a specific group, was analysed retrospectively...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27814485/ex-vivo-study-of-acoustic-radiation-force-impulse-imaging-elastography-for-evaluation-of-rat-liver-with-steatosis
#6
Yanrong Guo, Changfeng Dong, Haoming Lin, Xinyu Zhang, Huiying Wen, Yuanyuan Shen, Tianfu Wang, Siping Chen, Yingxia Liu, Xin Chen
Nonalcoholic fatty liver disease (NAFLD) is one of the most common liver diseases in developed countries. Accurate, noninvasive tests for diagnosing NAFLD are urgently needed. The goals of this study were to evaluate the utility of acoustic radiation force impulse (ARFI) elastography for determining the severity grade of steatosis in rat livers, and to investigate the changes in various histologic and biochemical characteristics. Steatosis was induced in the livers of 57 rats by gavage feeding of a high fat emulsion; 12 rats received a standard diet only and served as controls...
February 2017: Ultrasonics
https://www.readbyqxmd.com/read/27792000/differences-of-standard-values-of-supersonic-shear-imaging-and-arfi-technique-in-vivo-study-of-testicular-tissue
#7
M Trottmann, J Rübenthaler, J Marcon, C G Stief, M F Reiser, D A Clevert
PURPOSE: To investigate the difference of standard values of Supersonic shear imaging (SSI) and Acoustic Radiation Force Impulse (ARFI) technique in the evaluation of testicular tissue stiffness in vivo. MATERIALS AND METHODS: 58 healthy male testes were examined using B-mode sonography and ARFI and SSI. B-mode sonography was performed in order to scan the testis for pathologies followed by performance of real-time elastography in three predefined areas (upper pole, central portion and lower pole) using the SuperSonic® Aixplorer ultrasound device (SuperSonic Imagine, Aix-en-Provence, France)...
October 27, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27703558/diagnostic-accuracy-of-acoustic-radiation-force-impulse-arfi-in-diagnosis-of-liver-fibrosis-among-egyptian-patients-with-chronic-hcv-infection
#8
Yasser A Elhosary, Saleh M Saleh, Wafaa M Ezzat, Dirk-André Clevert
BACKGROUND: Acoustic radiation force impulse (ARFI) evaluates liver stiffness non-invasively and was invented recently. This technique can easily and accurately assess the degree of liver fibrosis in clinical practice. AIM: The aim of this study was to detect the diagnostic performance of ARFI elastography in the staging of fibrosis in some Egyptian patients with chronic HCV infection. PATIENTS AND METHODS: One hundred ninety patients with chronic HCV infection; 142 men and 48 women were enrolled in the study...
September 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27690214/low-pretreatment-acoustic-radiation-force-impulse-imaging-arfi-values-predict-sustained-virological-response-in-antiviral-hepatitis-c-virus-hcv-therapy
#9
Steffen Zopf, Lara Rösch, Peter C Konturek, Ruediger S Goertz, Markus F Neurath, Deike Strobel
BACKGROUND Non-invasive procedures such as acoustic radiation force impulse imaging (ARFI) shear-wave elastography are currently used for the assessment of liver fibrosis. In the course of chronic hepatitis C, significant liver fibrosis or cirrhosis develops in approximately 25% of patients, which is a negative predictor of antiviral treatment response. Cirrhosis can be prevented by successful virus elimination. In this prospective study, a pretreatment ARFI cutoff value of 1.5 m/s was evaluated in relation to sustained virological response to anti-HCV therapy...
2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27663656/liver-and-spleen-stiffness-measurements-by-point-shear-wave-elastography-via-acoustic-radiation-force-impulse-intraobserver-and-interobserver-variability-and-predictors-of-variability-in-a-us-population
#10
Maya Balakrishnan, Fernanda Souza, Carolina Muñoz, Salvador Augustin, Nicole Loo, Yanhong Deng, Maria Ciarleglio, Guadalupe Garcia-Tsao
OBJECTIVES: Measurements of liver stiffness and spleen stiffness are useful noninvasive ways to assess fibrosis and portal hypertension in patients with chronic liver disease. One method for assessing stiffness is by point shear wave elastography via acoustic radiation force impulse imaging (ARFI). Its advantage is that sites where stiffness is measured are visualized sonographically. However, its reliability has not been well established, and all studies done to date evaluating the use of ARFI in chronic liver disease have been performed outside the United States...
September 23, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27599890/applications-of-acoustic-radiation-force-impulse-quantification-in-chronic-kidney-disease-a-review
#11
REVIEW
Liang Wang
Acoustic radiation force impulse (ARFI) imaging is an emerging technique with great promise in the field of elastography. Previous studies have validated ARFI quantification as a method of estimating fibrosis in chronic liver disease. Similarly, fibrosis is the principal process underlying the progression of chronic kidney disease, which is the major cause of renal failure. However, the quantification of tissue stiffness using ARFI imaging is more complex in the kidney than in the liver. Moreover, not all previous studies are comparable because they employed different procedures...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27599889/preclinical-evaluation-of-acoustic-radiation-force-impulse-measurements-in-regions-of-heterogeneous-elasticity
#12
Katharina Hollerieth, Bernhard Gaßmann, Stefan Wagenpfeil, Philipp Moog, Minh-Truc Vo-Cong, Uwe Heemann, Konrad Friedrich Stock
PURPOSE: The purpose of this study was to compare the reliability of ultrasound-based shear wave elastography in regions of homogeneous versus heterogeneous elasticity by using two different probes. METHODS: Using acoustic radiation force impulse (ARFI) elastography, we measured the shear wave velocity (SWV) in different lesions of an elastography phantom with the convex 4C1 probe and the linear 9L4 probe. The region of interest (ROI) was positioned in such a way that it was partly filled by one of the lesions (0%, 25%, 50%, 75%, and 100%) and partly by the background of the phantom (100%, 75%, 50%, 25%, and 0%, respectively)...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27567801/the-diagnostic-performances-of-strain-elastography-se-acoustic-radiation-force-impulse-arfi-and-point-shear-wave-speed-psws-for-non-calcified-thyroid-nodules
#13
Bao-Ding Chen, Hui-Xiong Xu, Yi-Feng Zhang, Bo-Ji Liu, Le-Hang Guo, Dan-Dan Li, Chong-Ke Zhao, Xiao-Long Li, Dan Wang, Shuang-Shuang Zhao
BACKGROUND: Non-calcified thyroid nodules are relatively difficult to diagnose only relying at conventional US images. OBJECTIVE: To investigate the diagnostic performances of conventional strain elastography (SE), acoustic radiation force impulse (ARFI) SE and point shear-wave speed (pSWS) for non-calcified thyroid nodules. METHODS: A total of 201 non-calcified thyroid nodules in 195 patients were studied. They were examined with conventional ultrasound (US), conventional SE, ARFI SE and pSWS...
August 16, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27540438/ultrasound-elastography-used-for-preventive-non-invasive-screening-in-early-detection-of-liver-fibrosis
#14
Florian Bert, Jona T Stahmeyer, Siegbert Rossol
BACKGROUND: Early discovery of liver fibrosis is becoming more popular because of enhanced incidence of hepatocellular carcinoma. Ultrasound-based liver elastography is a method used to approve suspected liver fibrosis or cirrhosis. We assessed the clinical usefulness of acoustic radiation force impulse shear wave elasticity imaging (ARFI-SWEI) as a preventive screening method to uncover fibrosis. METHODS: We screened 382 patients by native routine sonography for abnormal liver results and divided them into six groups: group 1: normal liver, groups 2-4: fatty liver grade I-III, group 5: liver cirrhosis, and group 6: inhomogenic liver tissue...
September 2016: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27504193/testicular-microlithiasis-and-preliminary-experience-of-acoustic-radiation-force-impulse-imaging
#15
Malene Roland Pedersen, Palle Jørn Sloth Osther, Søren Rafael Rafaelsen
BACKGROUND: Elastography of the testis can be used as a part of multiparametric examination of the scrotum. PURPOSE: To determine the testicular stiffness using acoustic radiation force impulse imaging (ARFI) technique in men with testicular microlithiasis (TML). MATERIAL AND METHODS: In 2013, 12 patients with diagnosed testicular microlithiasis in 2008 (mean age, 51 years; age range, 25-76 years) underwent a 5-year follow-up B-mode ultrasonography with three ARFI elastography measurements of each testis...
July 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/27500382/regression-of-fibrosis-and-portal-hypertension-in-hcv-associated-cirrhosis-and-sustained-virologic-response-after-interferon-free-antiviral-therapy
#16
V Knop, D Hoppe, T Welzel, J Vermehren, E Herrmann, A Vermehren, M Friedrich-Rust, C Sarrazin, S Zeuzem, M-W Welker
It is still controversial, whether and to what amount cirrhosis and portal hypertension are reversible in patients with hepatitis C virus (HCV)-associated cirrhosis and sustained virologic response (SVR) after interferon-free antiviral therapy. In this study, we prospectively evaluated dynamics of liver and spleen stiffness in HCV-infected patients with advanced liver disease and SVR after interferon-free treatment. A total of 54 patients with HCV-associated cirrhosis and SVR were included. Liver and spleen stiffness was measured at therapy baseline (BL), end of treatment (EOT) and 24 weeks after EOT (FU24) by transient liver elastography (L-TE) as well as by acoustic radiation force impulse of the liver (L-ARFI) and spleen (S-ARFI), as well as biochemical, virologic and clinical data...
August 8, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27488328/new-combined-parameter-of-liver-and-splenic-stiffness-as-determined-by-elastography-in-healthy-volunteers
#17
Laura Kassym, Mohammed A Nounou, Zauresh Zhumadilova, Asad I Dajani, Nurgul Barkibayeva, Ayan Myssayev, Tolebay Rakhypbekov, Adnan M Abuhammour
BACKGROUND: The diagnosis of chronic liver disease (CLD) leading to fibrosis, cirrhosis, and portal hypertension had witnessed dramatic changes after the introduction of noninvasive figure accessible tools over the past few years. Imaging techniques that are based on evaluation of the liver stiffness was particularly useful in this respect. Acoustic radiation force impulse (ARFI) emerged as an interesting figure tool with reliable repute and high precision. AIMS: To evaluate liver stiffness measurement (LSM) and splenic stiffness measurement (SSM) in healthy volunteers as concluded by the ARFI technique and to out a numeric calculated ratio that may reflect their correlation in the otherwise healthy liver...
July 2016: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/27471118/anisotropic-properties-of-breast-tissue-measured-by-acoustic-radiation-force-impulse-quantification
#18
JianQiao Zhou, ZhiFang Yang, WeiWei Zhan, YiJie Dong, Chun Zhou
The goal of our study was to investigate the anisotropy of normal breast glandular and fatty tissue with acoustic radiation force impulse (ARFI) quantification. A total of 137 breasts in 137 women were enrolled. These breasts were divided into the duct-apparent group and the duct-inapparent group, divided into the ligament-apparent group and the ligament-inapparent group. Shear wave velocity (SWV) in the radial (SWV(r)) and anti-radial (SWV(a-r)) directions was measured. The elastic anisotropy of glandular tissue and fatty tissue was evaluated as the ratio between SWV(r) and SWV(a-r)...
October 2016: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27460858/comparison-of-placental-elasticity-in-normal-and-pre-eclamptic-pregnant-women-by-acoustic-radiation-force-impulse-elastosonography
#19
Erbil Karaman, Harun Arslan, Orkun Çetin, Hanιm Güler Şahin, Aydin Bora, Alparslan Yavuz, Sadi Elasan, İbrahim Akbudak
AIM: The aim of this research was to study and compare placental elasticity with acoustic radiation force impulse (ARFI) elastography in pre-eclamptic and normal pregnancies. METHODS: A total of 107 singleton pregnancies in the third trimester (38 healthy control subjects, 34 patients with gestational hypertension, and 35 pre-eclampsia patients) were included in the study. ARFI elastography was used to determine the placental elasticity in the three predetermined regions of the placenta (the fetal edge, maternal edge, and central part of the placenta)...
November 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27459032/usefulness-of-percutaneous-elastography-by-acoustic-radiation-force-impulse-for-the-non-invasive-diagnosis-of-chronic-pancreatitis
#20
Camilo Julio Llamoza-Torres, Maria Fuentes-Pardo, Francisco Javier Álvarez-Higueras, Fernando Alberca-de-Las-Parras, Fernando Carballo-Álvarez
OBJECTIVE: To determine the accuracy of the acoustic radiation force impulse (ARFI) technique for the diagnosis of chronic pancreatitis. MATERIALS AND METHODS: We present an observational, single-center study that included patients with suspected chronic pancreatitis in the period between October 2012 and September 2015 who underwent endoscopic ultrasound (EUS) and were classified according to the standard and Rosemont criteria. The same group of patients was assessed by the ARFI technology using ACUSON S2000™ equipment with Virtual Touch™ Quantification software for the assessment of pancreatic stiffness by obtaining the shear wave velocity (SWV) in the head, body and tail of the pancreas...
August 2016: Revista Española de Enfermedades Digestivas
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