Eriko Matsuda, Takahiro Fukuhara, Ryohei Donishi, Kenkichiro Taira, Satoshi Koyama, Tsuyoshi Morisaki, Kazunori Fujiwara, Hiromi Takeuchi
The goal of the work described here was to evaluate the utility of acoustic radiation force impulse (ARFI) imaging, a novel elastography technique, for differentiating benign from malignant salivary gland tumors. With the use of conventional strain elastography (SE) and ARFI imaging with a four-pattern scoring system, 185 tumors were examined (163 benign/22 malignant). When a score of ≥3 was used to define malignancy, the sensitivity, specificity and accuracy were higher for ARFI imaging (77.3%, 63.8% and 65...
November 11, 2020: Ultrasound in Medicine & Biology
X-L Sun, Y-P Dai, Z Chen, J Zhang
OBJECTIVE: About 30% of the breast's ductal carcinoma in situ (DCIS) will be histological upstate according to the postoperative pathology. Sentinel lymph node biopsy (SLNB) is currently recommended on most DCIS excision in order to potentially avoid secondary surgery, which is apparently over-treated for most patients with DCIS. Hence, the decision to perform SLNB before DCIS excision remains controversial. The aim of this study is to establish an improved nomogram including elastography for predicting the risk of the histological upgrade of DCIS preoperatively...
October 2020: European Review for Medical and Pharmacological Sciences
Ning Li, Ju-Hua He, Chao Song, Li-Chun Yang, Hong-Jiang Zhang, Zhi-Hai Li
Background: It is controversial whether contralateral prophylactic central neck dissection (PCND) should be performed for patients with solitary and clinical lymph node negative (cN0 ) papillary thyroid carcinoma (PTC) although routine ipsilateral PCND is required. Objective: The aim of this study was to develop an improved nomogram including clinical features, ultrasound, and acoustic radiation force impulse (ARFI) elastography for the prediction of contralateral central lymph node metastasis (CLNM) in patients with solitary and cN0 PTC in the preoperative period...
2020: Cancer Management and Research
H C Cenkeri, T B Bidaci, B Yilmaz, G Desteli
Backround: Ultrasonography is difficult to distinguish between endometrial pathologies and often requires curettage. ARFI (Acoustic Radiation Force-Based Elasticity Imaging) is a new ultrasonography elastography method. Using ARFI, it is possible to obtain information about the likelihood of the tissue benign or malignant. Aim: The aim of this study is to evaluate the contribution of ARFI to differentiate endometrial pathologies in hysterectomy specimens. Subjects and Methods: Our study was prospectively, January-May 2017, performed in randomly 45 cases of 41-91 years of age (mean 58...
October 2020: Nigerian Journal of Clinical Practice
Michael Ertl, Margarethe Woeckel, Christoph Maurer
INTRODUCTION:  Ultrasound shear wave elastography is well established in diagnostics of several parenchymatous organs and is recommended by respective guidelines. So far, research about applications in relevant neurological conditions is missing, especially in adults. Here we aimed to examine the method for the differentiation of ischemic (IS) and hemorrhagic strokes (HS) and cerebral mass effects. MATERIALS & METHODS:  50 patients with a confirmed diagnosis of HS or IS were enrolled in this prospective study...
October 9, 2020: Ultraschall in der Medizin
Andréia Coutinho Facin, Ricardo Andres Ramirez Uscategui, Marjury Cristina Maronezi, Letícia Pavan, Mareliza Possa Menezes, Gabriel Luiz Montanhim, Aparecido Antonio Camacho, Marcus Antônio Rossi Feliciano, Paola Castro Moraes
The purpose of this study is to determine whether the brachycephalic obstructive airway syndrome (BOAS) is correlated to alterations in liver and spleen elasticity. Forty-eight brachycephalic and 22 mesocephalic dogs were submitted to a BOAS functional assessment, laboratory tests, abdominal ultrasound and liver and spleen Acoustic Radiation Force Impulse (ARFI) elastography. Dogs clinically affected by BOAS had higher values of liver stiffness (p < 0.001) than healthy dogs: medial lobes (1.57 ± 0...
September 30, 2020: Scientific Reports
Linglin Wei, Zhen Ye, Zhongtao Bao, Xiang Xu, Xiaoyu Lin, Ling Chen
OBJECTIVES: Acoustic radiation force impulse (ARFI) elastography, the aspartate aminotransferase-to-alanine aminotransferase ratio (AAR), aspartate aminotransferase-to-platelet ratio index (APRI), and the fibrosis-4 (FIB-4) index are widely used to assess liver fibrosis. However, efficacies of these methods in the evaluation of hepatic functional reserve remain unclear. In this study, we investigated the relationship between ARFI elastography combined with either AAR, APRI, or FIB-4 index and Child-Pugh (CP) class for the evaluation of hepatic functional reserve in patients with chronic hepatitis B (CHB)-related cirrhosis...
2020: Clinics
Ernst Jung, Vanessa Hösl, Sarah von Fraunberg, Friedrich Jung, Lukas Prantl
BACKGROUND: Capsular contractures around breast implants usually develop leading to pain and aesthetically inadequate results and ultimately often requires the replacement of the implants. Textured silicone implants are the most commonly placed implant, but polyurethane-coated implants are increasingly being used in an attempt to ameliorate the long-term complications associated with implant insertion. AIM: Capsular contracture is traditionally classified using the Baker scale, a subjective classification system based upon clinical findings...
September 8, 2020: Clinical Hemorheology and Microcirculation
Lidia Monti, Marco Salsano, Manila Candusso, Alfonso Wolfango Avolio, Giovanna Soglia, Marzia Marino, Paola Francalanci, Marco Spada, Paolo Toma
OBJECTIVE. Frequency of acute rejection (AR) after pediatric liver transplant remains high despite progress in immunosuppression. Liver biopsy (LB) is the reference standard for the diagnosis of AR despite its potential for morbidity. The purpose of our study was to evaluate the ability of acoustic radiation force impulse (ARFI) imaging to distinguish AR from other causes of short- and medium-term liver dysfunction and to identify liver transplant cases with normal liver function. MATERIALS AND METHODS. ARFI imaging was used to evaluate shear wave velocity (SWV) after liver transplant in young children...
September 2, 2020: AJR. American Journal of Roentgenology
Vikrant Kanagaraju, A V B Rakshith, B Devanand, R Rajakumar
Background: The purpose of this study was to evaluate the usefulness of strain elastography and acoustic radiation force impulse (ARFI) imaging in the differentiation of benign and malignant cervical lymph nodes (LNs). Materials and Methods: In this prospective study, 50 enlarged cervical LNs (33 benign and 17 malignant) were examined by B-mode ultrasound (US), color Doppler, and strain elastography. Elastographic patterns (1-5) were categorized based on distribution of hard area within LN...
April 2020: Journal of Medical Ultrasound
Karolina Grąt, Michał Grąt, Olgierd Rowiński
Non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) are becoming some of the major health problems in well-developed countries, together with the increasing prevalence of obesity, metabolic syndrome, and all of their systemic complications. As the future prognoses are even more disturbing and point toward further increase in population affected with NAFLD/NASH, there is an urgent need for widely available and reliable diagnostic methods. Consensus on a non-invasive, accurate diagnostic modality for the use in ongoing clinical trials is also required, particularly considering a current lack of any registered drug for the treatment of NAFLD/NASH...
August 21, 2020: Biomedicines
Samar K Darweesh, Naglaa Zayed, Mira Atef, Eman Ramzy, Ayman Yousry, Sherief Musa
BACKGROUND: Transient elastography and acoustic radiation force impulse (ARFI) imaging are noninvasive tools for liver stiffness measurement (LSM), which may be influenced by cholestasis. AIM: The aim of the study was to evaluate the performance of transient elastography and ARFI in extrahepatic cholestasis and correlate changes in LSM with biochemical activity. MATERIALS AND METHODS: A total of 38 patients with extrahepatic cholestasis prospectively underwent transient elastography and ARFI...
August 14, 2020: European Journal of Gastroenterology & Hepatology
Kadihan Yalçın, Bilge Çakar Demir
PURPOSE: To measure spleen stiffness by shear wave elastography (SWE) using acoustic radiation force impulse (ARFI) in patients with splenomegaly and to evaluate utility of elastography technique in identifying etiology of splenomegaly. METHODS: Sixty-one treatment-naïve patients with splenomegaly were enrolled. The control group consisted of 20 healthy subjects without history of any disease including diabetes and hypertension, alcohol consumption, or biochemical or ultrasonographic findings indicating hepatic and renal diseases...
August 8, 2020: Abdominal Radiology
Mario Pasurka, Christoph Lutter, Matthias W Hoppe, Rafael Heiss, Hartmut Gaulrapp, Antonio Ernstberger, Martin Engelhardt, Casper Grim, Raimund Forst, Thilo Hotfiel
BACKGROUND: Tissue flossing has been introduced to increase ROM and flexibility, to enhance prevention and rehabilitation, as well as to improve athletic performance; however, limited evidence exists for its efficacy. The aim of the present study was to evaluate the effects of ankle flossing on periarticular stiffness and perfusion via acoustic radiation force impulse (ARFI) elastography and Power Doppler Sonography (PDS). METHODS: Twenty-one healthy students (age: 24±2 years, BMI: 22±3 kg/m2) were recruited as participants...
June 23, 2020: Journal of Sports Medicine and Physical Fitness
Victor Bâldea, Ioan Sporea, Anca Tudor, Alina Popescu, Felix Bende, Roxana Șirli
AIMS: Our aim was to assess the diagnostic performance of transient elastography (TE) and Virtual Touch Quantification (VTQ), a point Shear Wave Elastography (pSWE) technique, using Acoustic Radiation Force Impulse (ARFI) technology, for liver fibrosis assessment, as compared to percutaneous liver biopsy (LB), in patients with chronic hepatitis B or C. METHODS: We analyzed 157 patients (80 with chronic hepatitis B and 77 with chronic hepatitis C) with reliable liver stiffness (LS) measurements, in whom we compared TE and VTQ to the LB performed during the same session (evaluated according to the Metavir scoring system: F0-F4)...
June 3, 2020: Journal of Gastrointestinal and Liver Diseases: JGLD
Richard G Barr, Stephanie R Wilson, Deborah Rubens, Guadalupe Garcia-Tsao, Giovanna Ferraioli
This multidisciplinary update of the Society of Radiologists in Ultrasound consensus statement on liver elastography incorporates the large volume of new information available in the literature since the initial publication. The recommended procedure for acquiring stiffness measurements is reviewed. There has been substantial improvement in the acoustic radiation force impulse (ARFI) technology-most notably the addition of a quality assessment of the shear wave propagation. Due to the efforts of the Quantitative Imaging Biomarkers Alliance, or QIBA, the variability of liver stiffness measurements between systems had decreased...
June 9, 2020: Radiology
Heng Yang, Carolina A Carrascal, Hua Xie, Vijay Shamdasani, Brian W Anthony
Ultrasound shear wave elastography (SWE) imaging is emerging as a quantitative and non-invasive tissue characterization modality. Shear wave generation using external mechanical vibration (EMV) has received extensive research interest over acoustic radiation force impulse (ARFI) because of its low cost and potential for portability. In this paper, we propose an EMV concept with multiple spherical sources that can be easily reconfigured in three configurations to induce unique shear wave propagation patterns...
June 5, 2020: Ultrasound in Medicine & Biology
Anil Chauhan, Sara Pourhassan Shamchi, Kristoffel R Dumon, Noel N Williams, Chandra M Sehgal
PURPOSE: To evaluate technical and patient-related factors that can affect the reliability of acoustic radiation force impulse shear wave elastography (ARFI-SWE) in morbidly obese patients. METHODS: A prospective single-center study was performed on 41 patients (32 females, 78%) presenting for preoperative evaluation for bariatric surgery. ARFI-SWE was performed using a 6 to 1.5 MHz curved (6C1) transducer. Hepatic steatosis was mild, moderate, severe, and absent in 24...
June 3, 2020: Journal of Clinical Ultrasound: JCU
Huseyin Bertan, Julide Oncu, Ersin Vanli, Kerem Alptekin, Ali Sahillioglu, Banu Kuran, Figen Yilmaz
OBJECTIVES: This study aimed to investigate the stiffness of the gastrocnemius (GC) muscle with acoustic radiation force impulse (ARFI) elastography after botulinum toxin-A (BTX-A) injection in children with spastic cerebral palsy (CP) and to examine the relationship between elastographic and clinical parameters. METHODS: This prospective randomized single-blind controlled clinical study included 49 lower extremities of 33 children with spastic CP. They were randomized into 2 groups: group 1 (n = 25 extremities in 17 children) received BTX-A injection and a home-based exercise program; group 2 (n = 24 extremities in 16 children) received only a home-based exercise program...
June 3, 2020: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Di Sun, Qijie Lu, Cong Wei, Yi Li, Yuanyi Zheng, Bing Hu
OBJECTIVES: To assess the combined diagnostic strategy of contrast-enhanced ultrasound (CEUS) and acoustic radiation force impulse (ARFI) in the precise differential diagnosis of clear cell renal cell carcinoma (CCRCC) and urothelium carcinoma of the renal pelvis (UCRP) with other small renal tumors (SRTs) <3 cm in size. METHODS: The elastography self-corrected CEUS (ESC) mode was established to perform the quantitative differential diagnosis of SRTs (<3 cm)...
August 2020: British Journal of Radiology
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