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Acoustic radiation force impulse

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https://www.readbyqxmd.com/read/29121718/non-invasive-assessment-of-liver-changes-in-eisenmenger-patients
#1
Siegrun Mebus, Nicole Nagdyman, Johanna Kügel, Reinhart Zachoval, Siegmund Lorenz Braun, Guido Haverkämper, Bernd Opgen-Rhein, Felix Berger, Sophia Horster, Jörg Schoetzau, Claudia Pujol Salvador, Ulrike Bauer, John Hess, Peter Ewert, Harald Kaemmerer
BACKGROUND: Eisenmenger syndrome as a severe form of cyanotic congenital heart disease results in a complex multisystemic disorder. Due to increased systemic venous pressure and the inability to ensure systemic perfusion and metabolic requirements, the liver may develop congestion, fibrosis or cirrhosis. This study aimed to assess hepatic abnormalities in Eisenmenger patients non-invasively. METHODS AND RESULTS: 10 adults with Eisenmenger syndrome (six female; median age 44...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29103357/noninvasive-liver-assessment-in-adult-patients-with-fontan-circulation-using-acoustic-radiation-force-impulse-elastography-and-hepatic-magnetic-resonance-imaging
#2
F Buendía-Fuentes, J L Melero-Ferrer, D Plaza-López, J Rueda-Soriano, A Osa-Saez, J Aguero, P Calvillo-Batllés, C Fonfria-Esparcia, A Ballesta-Cuñat, L Martí-Bonmatí, L Martínez-Dolz
BACKGROUND: Patients who have undergone the Fontan procedure are at risk of developing hepatic dysfunction. However, broad recommendations regarding liver monitoring are limited. The purpose of this study was to characterize the frequency of liver disease in adult Fontan patients using multimodality imaging (hepatic magnetic resonance imaging [MRI], acoustic radiation force impulse [ARFI] elastography, or hepatic ultrasound). METHODS: In a prospective cross-sectional analysis of adult patients palliated with a Fontan procedure, hepatic MRI, ARFI, and hepatic ultrasound were used to assess for liver disease...
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29101980/acr-appropriateness-criteria-%C3%A2-chronic-liver%C3%A2-disease
#3
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...
November 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29069254/accuracy-of-transient-elastography-fibroscan%C3%A2-acoustic-radiation-force-impulse-arfi-imaging-the-enhanced-liver-fibrosis-elf-test-apri-and-the-fib-4-index-compared-with-liver-biopsy-in-patients-with-chronic-hepatitis-c
#4
Taisa Grotta Ragazzo, Denise Paranagua-Vezozzo, Fabiana Roberto Lima, Daniel Ferraz de Campos Mazo, Mário Guimarães Pessoa, Claudia Pinto Oliveira, Venancio Avancini Ferreira Alves, Flair José Carrilho
OBJECTIVES: Although liver biopsy is the gold standard for determining the degree of liver fibrosis, issues regarding its invasiveness and the small amount of liver tissue evaluated can limit its applicability and interpretation in clinical practice. Non-invasive evaluation methods for liver fibrosis can address some of these limitations. The aim of this study was to evaluate the accuracy of transient elastography-FibroScan®, acoustic radiation force impulse (ARFI), enhanced liver fibrosis (ELF), the aspartate aminotransferase-to-platelet ratio index (APRI), and the FIB-4 index compared with liver biopsy in hepatitis C...
October 2017: Clinics
https://www.readbyqxmd.com/read/29068984/diagnostic-value-of-acoustic-radiation-force-impulse-imaging-for-assessing-superficial-lymph-nodes-a-diagnostic-accuracy-study
#5
Fengjuan Zhang, Xinming Zhao, Xiaohui Ji, Ruoling Han, Ping Li, Min Du
The aim of this study was to assess the diagnostic value of acoustic radiation force impulse (ARFI) imaging for differentiating superficial lymph nodes.Virtual touch tissue imaging (VTI) grade and shear wave velocity (SWV) were analyzed and compared in 97 patients (65 women, 32 men; mean age, 49 y; range, 23-72 y) with 97 lymph nodes [23 chronic nonspecific reactive lymph nodes (CLNs), 38 metastatic lymph nodes (MLNs), and 36 blood and lymphatic system diseases lymph nodes (BLLNs)]. The elastography characteristics in patients with CLNs, MLNs, and BLLNs were compared using the nonparametric Kruskal-Wallis test and Mann-Whitney U test for continuous variables and categorical variables...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29066092/longitudinal-monitoring-of-liver-stiffness-by-acoustic-radiation-force-impulse-imaging-in-patients-with-chronic-hepatitis%C3%A2-b-receiving-entecavir
#6
Sheng-Di Wu, Hong Ding, Li-Li Liu, Yuan Zhuang, Yun Liu, Li-Sha Cheng, Si-Qi Wang, Yu-Jen Tseng, Ji-Yao Wang, Wei Jiang
BACKGROUND: Acoustic radiation force impulse (ARFI) imaging measures liver stiffness (LS), which significantly correlates with the stage of liver fibrosis in treatment-naive patients with chronic hepatitis B (CHB). AIM: We aimed to prospectively assess the clinical usefulness of ARFI during long-term antiviral therapy in CHB. METHOD: Seventy-one CHB patients were consecutively recruited and paired liver biopsies were performed in 27 patients...
October 21, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/29064111/acoustic-radiation-force-impulse-quantification-in-the-evaluation-of-thyroid-elasticity-in-pediatric-patients-with-hashimoto-thyroiditis
#7
Serap Yucel, Meltem Ceyhan Bilgici, Cengiz Kara, Gulay Can Yilmaz, H Murat Aydin, Muzaffer Elmali, Leman Tomak, Dilek Saglam
OBJECTIVES: To evaluate the parenchymal elasticity of the thyroid gland with acoustic radiation force impulse imaging in pediatric patients with Hashimoto thyroiditis and to compare it with healthy volunteers. METHODS: Twenty-six patients with Hashimoto thyroiditis and 26 healthy volunteers between 6 and 17 years were included. The shear wave velocity (SWV) values of both thyroid lobes in both groups were evaluated. RESULTS: The age and sex characteristics of the controls and patients with Hashimoto thyroiditis were similar...
October 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29060526/the-influence-of-hepatic-steatosis-on-the-evaluation-of-fibrosis-with-non-alcoholic-fatty-liver-disease-by-acoustic-radiation-force-impulse
#8
Yanrong Guo, Haoming Lin, Xinyu Zhang, Huiying Wen, Siping Chen, Xin Chen
Acoustic radiation force impulse (ARFI) elastography is a non-invasive method for the assessment of liver by measuring liver stiffness. The aim of this study is to evaluate the accuracy of ARFI for the diagnosis of liver fibrosis and to assess impact of steatosis on liver fibrosis stiffness measurement, in rats model of non-alcoholic fatty liver disease (NAFLD). The rat models were conducted in 59 rats. The right liver lobe was processed and embedded in a fabricated gelatin solution. Liver mechanics were measured using shear wave velocity (SWV) induced by acoustic radiation force...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060525/arfi-variance-of-acceleration-voa-for-noninvasive-characterization-of-human-carotid-plaques-in-vivo
#9
Gabriela Torres, Tomasz J Czernuszewicz, Jonathon W Homeister, Mark A Farber, Caterina M Gallippi
Rather than degree of stenosis, assessing plaque structure and composition is relevant to discerning risk for plaque rupture with downstream ischemic event. The structure and composition of carotid plaque has been assessed noninvasively using Acoustic Radiation Force Impulse (ARFI) ultrasound imaging. In particular, ARFI-derived peak displacement (PD) estimations have been demonstrated for discriminating soft (lipid rich necrotic core (LRNC) or intraplaque hemorrhage (IPH)) from stiff (collagen (COL) or calcium (CAL)) plaque features; however, PD did not differentiate LRNC from IPH or COL from CAL...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29032665/does-standoff-material-affect-acoustic-radiation-force-impulse-elastography-a-preclinical-study-of-a-modified-elastography-phantom
#10
Katharina Hollerieth, Bernhard Gaßmann, Stefan Wagenpfeil, Stephan Kemmner, Uwe Heemann, Konrad Friedrich Stock
Purpose: This study was conducted to determine the influence of standoff material on acoustic radiation force impulse (ARFI) measurements in an elasticity phantom by using two different probes. Methods: Using ARFI elastography, 10 observers measured the shear wave velocity (SWV, m/sec) in different lesions of an elasticity phantom with a convex 4C1 probe and a linear 9L4 probe. The experimental setup was expanded by the use of an interposed piece of porcine muscle as standoff material...
July 28, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29018925/the-diagnostic-performance-of-shear-wave-elastography-for-liver-fibrosis-in-children-and-adolescents-a-systematic-review-and-diagnostic-meta-analysis
#11
Jeong Rye Kim, Chong Hyun Suh, Hee Mang Yoon, Jin Seong Lee, Young Ah Cho, Ah Young Jung
OBJECTIVE: To assess the diagnostic performance of shear-wave elastography for determining the severity of liver fibrosis in children and adolescents. METHODS: An electronic literature search of PubMed and EMBASE was conducted. Bivariate modelling and hierarchical summary receiver-operating-characteristic modelling were performed to evaluate the diagnostic performance of shear-wave elastography. Meta-regression and subgroup analyses according to the modality of shear-wave imaging and the degree of liver fibrosis were also performed...
October 10, 2017: European Radiology
https://www.readbyqxmd.com/read/28965721/prospective-comparison-of-the-diagnostic-performance-of-magnetic-resonance-elastography-with-acoustic-radiation-force-impulse-elastography-for-pre-operative-staging-of-hepatic-fibrosis-in-patients-with-hepatocellular-carcinoma
#12
Chen-Te Chou, Ran-Chou Chen, Wen-Pei Wu, Ping-Yi Lin, Yao-Li Chen
The purpose of this study was to compare the diagnostic accuracy of magnetic resonance (MR) elastography with that of acoustic radiation force impulse (ARFI) elastography for pre-operative staging of hepatic fibrosis in patients with hepatocellular carcinoma. We prospectively enrolled 77 patients who were scheduled to undergo hepatectomy for hepatocellular carcinoma. Pre-operative MRE and ARFI elastography examinations were performed on the same day, and liver stiffness/velocity values were determined. Fibrosis stage and necro-inflammatory activity of resected specimens were determined histopathologically using the METAVIR scoring system...
September 28, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28900767/quantitative-assessment-of-muscular-stiffness-in-children-with-cerebral-palsy-using-acoustic-radiation-force-impulse-arfi-ultrasound-elastography
#13
Meltem Ceyhan Bilgici, Tumay Bekci, Yasemin Ulus, Hamit Ozyurek, Omer Faruk Aydin, Leman Tomak, Mustafa Bekir Selcuk
PURPOSE: To evaluate the feasibility of quantitative analysis of muscle stiffness in the medial gastrocnemius muscle (GCM) by acoustic radiation force impulse (ARFI) ultrasound elastography in children with spastic cerebral palsy (CP). METHODS: Seventeen children with spastic CP and 25 healthy children participated in the study between the years 2016-2017. The medial GCM in the CP group was assessed using the Modified Ashworth Scale (MAS) by a physiatrist. ARFI was used to measure the shear-wave velocities (SWVs) of the medial GCM...
September 12, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28885206/ultrasound-elastography-in-diagnosis-and-follow-up-for-patients-with-chronic-recurrent-parotitis
#14
Pamela Zengel, Christoph A Reichel, Teresa Vincek, Dirk André Clevert
PURPOSE: Chronic recurrent parotitis (CRP) is a non-obstructive disease with episodes characterized by painful swelling of the parotid gland. It presents in both a juvenile and an adult form, with no clear information on its actual origin. Diagnosis is based on patient medical history and ultrasound examination but is frequently not correctly identified. Acoustic Radiation Force Impulse Imaging (ARFI) is a novel ultrasound elastography technology that has recently been implemented in the diagnostic work-up of patients with malignancies...
September 4, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28882058/role-of-acoustic-radiation-force-impulse-and-shear-wave-velocity-in-prediction-of-preterm-birth-a-prospective-study
#15
Arjit Agarwal, Shubhra Agarwal, Shruti Chandak
Background Preterm birth is one of the important causes of neonatal morbidity where we rely on subjective criteria such as modified Bishop's scoring and contemporary sonographic measurement of cervical length. Acoustic radiation force impulse (ARFI) is a technological advancement in elastography that can be employed in prediction of cervical softening and preterm labor. Purpose To evaluate the role of ARFI technique and shear wave velocity (SWV) estimates as a predictor of preterm birth and its comparison with other clinical and sono-elastographic measures...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28877093/assessment-of-liver-fibrosis-with-acoustic-radiation-force-impulse-in-patients-with-chronic-hepatitis-c
#16
LETTER
Yaofu Fan, Wen Cao, Hongjie Di, Chao Liu
No abstract text is available yet for this article.
October 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28871805/acoustic-radiation-force-impulse-elastography-in-determining-the-effects-of-type-1-diabetes-on-pancreas-and-kidney-elasticity-in-children
#17
Dilek Sağlam, Meltem Ceyhan Bilgici, Cengiz Kara, Gülay Can Yılmaz, İlkay Çamlıdağ
OBJECTIVE: The aim of this study is to determine the effects of type 1 diabetes on pancreas and kidney elasticity in children, using acoustic radiation force impulse ultrasound elastography. SUBJECTS AND METHODS: Sixty autoantibody-positive patients with type 1 diabetes (45% girls; mean [± SD] age, 11.7 ± 4.4 years; range, 1.9-19.3 years) admitted to the pediatric endocrinology outpatient clinic and 32 healthy children (50% girls; mean age, 10.2 ± 3.8 years; range, 2...
November 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28852319/combination-of-acoustic-radiation-force-impulse-imaging-serological-indexes-and-contrast-enhanced-ultrasound-for-diagnosis-of-liver-lesions
#18
Xiao-Lan Sun, Hui Yao, Qiong Men, Ke-Zhu Hou, Zhen Chen, Chang-Qing Xu, Li-Wei Liang
AIM: To assess the value of combined acoustic radiation force impulse (ARFI) imaging, serological indexes and contrast-enhanced ultrasound (CEUS) in distinguishing between benign and malignant liver lesions. METHODS: Patients with liver lesions treated at our hospital were included in this study. The lesions were divided into either a malignant tumor group or a benign tumor group according to pathological or radiological findings. ARFI quantitative detection, serological testing and CEUS quantitative detection were performed and compared...
August 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28839883/virtual-touch-quantification-vtq-elastography-for-non-invasive-assessment-of-liver-disease-and-its-complications-what-the-clinician-needs-to-know
#19
REVIEW
David Sherman, Phillip Lung, Philip Shorvon
Liver stiffness measurement (LSM) is the most widely used non-invasive alternative to biopsy for assessing liver fibrosis in the UK. Virtual touch quantification (VTq, also known as acoustic radiation force impulse) is the principal available alternative to transient elastography (Fibroscan) and is delivered via software enhancements to standard ultrasound (US) machines. It has recently been endorsed by National Institute for Health and Care Excellence in terms of both accuracy and cost-effectiveness for use in viral hepatitis...
January 2017: Frontline Gastroenterology
https://www.readbyqxmd.com/read/28836931/liver-stiffness-measurements-using-acoustic-radiation-force-impulse-in-recipients-of-living-donor-and-deceased-donor-orthotopic-liver-transplant
#20
Kemal Murat Haberal, Hale Turnaoğlu, Adnan Özdemir, Nihal Uslu, Asuman Nihan Haberal Reyhan, Gökhan Moray, Mehmet Haberal
OBJECTIVES: The aim of this study was to evaluate the diagnostic efficiency of the acoustic radiation force impulse (Siemens Medical Solutions, Erlangen, Germany) elastography in assessment of fibrosis in orthotopic liver transplant patients. MATERIALS AND METHODS: We enrolled 28 orthotopic liver transplant patients (deceased and living donors), whose biopsy decision had been prospectively given clinically. Ten acoustic radiation force impulse elastographic measurements were applied before the biopsy or within 3 days after the biopsy by 2 radiologists...
August 24, 2017: Experimental and Clinical Transplantation
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