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Elastography ARFI

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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/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
#3
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
#4
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/29060526/the-influence-of-hepatic-steatosis-on-the-evaluation-of-fibrosis-with-non-alcoholic-fatty-liver-disease-by-acoustic-radiation-force-impulse
#5
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/29032665/does-standoff-material-affect-acoustic-radiation-force-impulse-elastography-a-preclinical-study-of-a-modified-elastography-phantom
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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/28811064/evaluation-of-non-alcoholic-fatty-liver-disease-using-acoustic-radiation-force-impulse-imaging-elastography-in-rat-models
#12
Yanrong Guo, Changfeng Dong, Haoming Lin, Xinyu Zhang, Huiying Wen, Yuanyuan Shen, Tianfu Wang, Siping Chen, Yingxia Liu, Xin Chen
The aim of this study is to evaluate the utility of acoustic radiation force impulse (ARFI) elastography for assessing hepatic fibrosis stage and non-alcoholic fatty liver disease (NAFLD) severity, as well as the relationship among hepatic histologic changes using shear wave velocity (SWV). Animal models with various degrees of NAFLD were established in 110 rats. The right liver lobe was processed and embedded in a fabricated gelatin solution (porcine skin). Liver mechanics were measured using SWV induced by acoustic radiation force...
August 12, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28790227/evaluation-of-acoustic-radiation-force-impulse-arfi-for-fibrosis-staging-in-chronic-liver-diseases
#13
Rino Alvani Gani, Irsan Hasan, Andri Sanityoso, Cosmas Rinaldi A Lesmana, Juferdy Kurniawan, Chyntia Olivia Maurine Jasirwan, Kemal Fariz Kalista, Lutfie Lutfie
BACKGROUND: acoustic radiation force impulse (ARFI) is a new proposed noninvasive method for liver fibrosis staging. Integrated with B-mode ultrasonography, ARFI can be used to assess liver tissue condition. However its diagnostic accuracy is still being continuously evaluated. Also, there is lack of data regarding the utilization of ARFI in our population. This study aimed to evaluate the diagnostic value of ARFI as an alternative noninvasive modality for fibrosis staging in chronic hepatitis B and hepatitis C patients in our population...
April 2017: Acta Medica Indonesiana
https://www.readbyqxmd.com/read/28735336/acoustic-radiation-force-impulse-arfi-elastography-and-serological-markers-in-assessment-of-liver-fibrosis-and-free-portal-pressure-in-patients-with-hepatitis-b
#14
Jun Li, Jie Yu, Xin-Yu Peng, Ting-Ting Du, Jia-Jia Wang, Jin Tong, Gui-Lin Lu, Xiang-Wei Wu
BACKGROUND The aim of this study was to investigate the feasibility of using acoustic radiation force impulse (ARFI) elastography, AST-to-platelet ratio index (APRI), and FIB-4 in assessing liver fibrosis and free portal pressure in patients with hepatitis B. MATERIAL AND METHODS We enrolled 126 patients with hepatitis B who underwent liver surgery at the General Surgery Department of the First Affiliated Hospital of Shihezi University Medical School from February 2013 to August 2015. Preoperatively, shear wave velocity (SWV) of the liver was measured with the Siemens S2000 ultrasound system to reflect liver stiffness...
July 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28720285/ultrasound-based-shear-wave-elastography-in-the-assessment-of-patients-with-diabetic-kidney-disease
#15
Flaviu Bob, Iulia Grosu, Ioan Sporea, Simona Bota, Alina Popescu, Alexandra Sima, Roxana Şirli, Ligia Petrica, Romulus Timar, Adalbert Schiller
In previous studies of acoustic radiation force impulse (ARFI) elastography, using Virtual Touch tissue quantification (VTQ) (Siemens Acuson S2000), it was reported that the measurement of renal shear wave speed in patients with chronic kidney disease (CKD) is not influenced exclusively by renal fibrosis. The purpose of the present study was to analyze the role of VTQ in patients with diabetic kidney disease, considered the main cause of CKD. The study group included 164 patients: 80 patients with diabetic kidney disease (DKD) and 84 without renal disease or diabetes mellitus...
July 15, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28715086/optimal-use-of-transient-elastography-and-acoustic-radiation-force-impulse-to-stage-liver-fibrosis-in-hiv-hcv-coinfected-patients-in-clinical-practice
#16
Juan José López, Núria Pérez-Àlvarez, Raul V Rodríguez, Antoni Jou, Pere Carbonell, José A Jiménez, Laura Soldevila, Montserrat Tenesa, Jordi Tor, Bonaventura Clotet, Jordi Bechini, Cristina Tural
OBJECTIVES: Liver fibrosis (LF) is crucial for the individualized management of patients with hepatitis C virus (HCV). We evaluated the concordance between two noninvasive methods for staging LF, transient elastography (TE) and acoustic radiation force impulse (ARFI), in patients coinfected with human immunodeficiency virus and HCV. We propose an algorithm for optimal use of both techniques in routine clinical practice. METHODS: A total of 89 human immunodeficiency virus/HCV-coinfected patients underwent TE and ARFI on the same day...
July 17, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28690935/acoustic-radiation-force-impulse-imaging-in-benign-and-malignant-breast-lesions
#17
Jayapriya Jayaraman, Venkatraman Indiran, Kanakaraj Kannan, Prabakaran Maduraimuthu
BACKGROUND: Elastography is a promising way to assess tissue differences regarding stiffness or elasticity, which has been historically assessed manually by palpation. Combined with conventional imaging modalities, shear wave elastography can potentially evaluate the stiffness of a breast lesion and consequently help detect malignant breast tumor from benign ones. The aim of this study was to evaluate the diagnostic role of shear wave elastography in breast lesions in the Indian population...
June 1, 2017: Curēus
https://www.readbyqxmd.com/read/28646602/comparison-of-acoustic-radiation-force-impulse-imaging-and-strain-elastography-in-differentiating-malignant-from-benign-thyroid-nodules
#18
Fengjuan Zhang, Xinming Zhao, Ruoling Han, Min Du, Ping Li, Xiaohui Ji
OBJECTIVES: This study aimed to evaluate the diagnostic value of acoustic radiation force impulse (ARFI) imaging and strain elastography in differentiating malignant from benign thyroid nodules. METHODS: This study included 128 patients (104 female and 24 male; mean age ± standard deviation, 48 ± 11 years; range, 23-76 years) with 152 pathologically proven thyroid nodules. Conventional sonography, strain ratio (SR) of strain elastography, virtual touch tissue imaging (VTI) grade, and virtual touch tissue quantification (shear wave velocity [SWV]) from ARFI imaging data were generated for each nodule...
June 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28595851/delineation-of-post-procedure-ablation-regions-with-electrode-displacement-elastography-with-a-comparison-to-acoustic-radiation-force-impulse-imaging
#19
Wenjun Yang, Tomy Varghese, Timothy Ziemlewicz, Marci Alexander, Meghan Lubner, James Louis Hinshaw, Shane Wells, Fred T Lee
We compared a quasi-static ultrasound elastography technique, referred to as electrode displacement elastography (EDE), with acoustic radiation force impulse imaging (ARFI) for monitoring microwave ablation (MWA) procedures on patients diagnosed with liver neoplasms. Forty-nine patients recruited to this study underwent EDE and ARFI with a Siemens Acuson S2000 system after an MWA procedure. On the basis of visualization results from two observers, the ablated region in ARFI images was recognizable on 20 patients on average in conjunction with B-mode imaging, whereas delineable ablation boundaries could be generated on 4 patients on average...
September 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28569362/can-arfi-elastography-be-used-to-differentiate-parathyroid-from-thyroid-lesions
#20
A Chandramohan, M Therese, D Abhraham, T V Paul, P Jacob Mazhuvanchary
OBJECTIVES: To assess if elasticity score (ES) and shear wave velocity (SWV) measurement obtained using ARFI elastography can differentiate between parathyroid lesions and thyroid nodules. MATERIALS AND METHODS: ARFI elastography was performed on patients with primary hyperparathyroidism or solid thyroid nodules who were being considered for surgery using virtual touch quantification and virtual touch imaging (VTI) software. Only patients with surgical histopathology (47 parathyroid lesions, 38 benign thyroid nodules and 55 malignant thyroid nodules) were included for final analysis...
May 31, 2017: Journal of Endocrinological Investigation
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