نتایج جستجو برای: elastography
تعداد نتایج: 5434 فیلتر نتایج به سال:
AIM To evaluate the ability of endoscopic ultrasound (EUS) elastography to distinguish benign from malignant pancreatic masses and lymph nodes. METHODS A multicenter study was conducted and included 222 patients who underwent EUS examination with assessment of a pancreatic mass (n = 121) or lymph node (n = 101). The classification as benign or malignant, based on the real time elastography pa...
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 ocul...
OBJECTIVE To compare the diagnostic performances of conventional ultrasound (US) and US elastography for the differentiation of nonpalpable breast masses, and to evaluate whether elastography is helpful at reducing the number of benign biopsies, using histological analysis as a reference standard. MATERIALS AND METHODS Conventional US and real-time elastographic images were obtained for 100 w...
Purpose: The aim of the study is to characterize the ultrasound and Doppler ultrasound artifact patterns of foreign bodies and to define the role of elastography in their detection. Material and method: Two in-vitro environments including a lamb leg and a lamb stomach coated with ultrasound gel, were prepared. Twenty-seven foreign bodies grouped as metallic, organic and inorganic were evaluated...
Ultrasound elastography is a recently developed ultrasound-based method which allows the qualitative or quantitative evaluation of the mechanical properties of tissue. Strain (compression) ultrasound elastography is the commonest technique performed by applying mild compression with the hand-held transducer to create real-time strain distribution maps, which are color-coded and superimposed on ...
Statistical Analysis of a Three-dimensional Axial Strain and Axial-shear Strain Elastography Algorithm. (August 2011) Mohan Li, B.S., University of Science and Technology of China Chair of Advisory Committee: Dr. Raffaella Righetti Pathological phenomena often change the mechanical properties of the tissue. Therefore, estimation of tissue mechanical properties can be of clinical importance. Ult...
BACKGROUND Transient elastography is a novel, noninvasive method for staging liver fibrosis. We compared elastography with histologic methods among hepatitis C virus (HCV)-infected and human immunodeficiency virus (HIV)-HCV-coinfected participants in an urban, predominantly black study population. METHODS Participants recruited from the AIDS Linked to the Intravenous Experience and the Johns ...
Objectives: In this study we sought to evaluate whether elastography targeted biopsy improves the detection rate of PCa (prostate cancer) compared to systematic biopsy guided by conventional grayscale ultrasound (GSU). Materials and method: We conducted a prospective study and enrolled 240 patients on which we performed a 12 core prostate biopsy by conventional ultrasound guidence or elastograp...
Foreword to the WFUMB guidelines and recommendations on the clinical use of ultrasound elastography.
The recent trend of a significant increase in publications on elastography evoked the World Federation for Ultrasound in Medicine and former are essentially evidenced-based guidelines and the latter are consensus-based guidelines. The most important part of the Biology (WFUMB) to feel the urgent need to create guidelines on the clinical use of elastography. At theWFUMB congress in Vienna in Aug...
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