نتایج جستجو برای: elastogram

تعداد نتایج: 65  

Journal: :Ultrasound in medicine & biology 1999
R Righetti F Kallel R J Stafford R E Price T A Krouskop J D Hazle J Ophir

The elastographic visualization and evaluation of high-intensity focused ultrasound (HIFU)-induced lesions were investigated. The lesions were induced in vitro in freshly excised canine livers. The use of different treatment intensity levels and exposure times resulted in lesions of different sizes. Each lesion was clearly depicted by the corresponding elastogram as being an area harder than th...

Journal: :Current Journal of Applied Science and Technology 2022

Background: Breast cancer is the commonest cause of related deaths globally, particularly in Africa where late presentation prevalent. Early diagnosis demands evolution non-invasive, highly sensitive and specific screening diagnostic investigation. This study assessed properties Sonoelastography ultrasonography, classifying breast masses compared to biopsy among women receiving care at Lagos Un...

Journal: :Circulation 2000
C L de Korte G Pasterkamp A F van der Steen H A Woutman N Bom

BACKGROUND The composition of plaque is a major determinant of coronary-related clinical syndromes. Intravascular ultrasound (IVUS) elastography has proven to be a technique capable of reflecting the mechanical properties of phantom material and the femoral arterial wall. The aim of this study was to investigate the capability of intravascular elastography to characterize different plaque compo...

Journal: :Physics in medicine and biology 2008
Arun Thitaikumar Louise M Mobbs Christina M Kraemer-Chant Brian S Garra Jonathan Ophir

Recently, the feasibility of visualizing the characteristics of bonding at an inclusion-background boundary using axial-shear strain elastography was demonstrated. In this paper, we report a feasibility study on the utility of the axial-shear strain elastograms in the classification of in vivo breast tumor as being benign or malignant. The study was performed using data sets obtained from 15 be...

Journal: :Ultrasound in medicine & biology 2011
Arun K Thittai Belfor Galaz Jonathan Ophir

In this paper, we report on a study that investigated the feasibility of reliably visualizing high-intensity focused ultrasound (HIFU) lesion boundaries using axial-shear strain elastograms (ASSE). The HIFU-induced lesion cases used in the present work were selected from data acquired in a previous study. The samples consisted of excised canine livers with thermal lesions produced by a magnetic...

Journal: :AJNR. American journal of neuroradiology 2011
S Merino J Arrazola A Cárdenas M Mendoza P De Miguel C Fernández T Ganado

BACKGROUND AND PURPOSE Malignancy correlates with hardness of tissues and US elastography can potentially analyze the stiffness of lesions. Our aim was to evaluate the utility of US elastography in the detection of malignant nodules and to investigate interobserver agreement with this technique. MATERIALS AND METHODS One-hundred three consecutive patients with 106 thyroid nodules were examine...

Journal: :Ultraschall in der Medizin 2013
A Stachs S Hartmann J Stubert M Dieterich A Martin G Kundt T Reimer B Gerber

PURPOSE We compared strain ratio vs. qualitative elastography for the further differentiation of focal breast lesions, with special focus on limiting factors. MATERIALS AND METHODS 215 patients with 224 histologically proven breast masses (116 malignant, 108 benign) were prospectively examined using a high-end ultrasound system (Philips iU22) with serial elastography function. B-mode scans an...

2017
Elliot Landau Danielle Del Re Bina Kviatkovsky Aryeh Rothstein Jonathan Scheiner Cheryl Lin

OBJECTIVES Since 2009, the rate of nondiagnostic (ND) thyroid nodule fine-needle aspiration (FNA) has ranged from 2% to 20%. A ND result can cause further patient morbidity secondary to repeated procedures and delay in diagnosis. The use of real-time strain elastography (RTE) in determining nodule malignant risk has gained considerable focus recently. A less studied area where RTE may prove ben...

Journal: :Journal of the Chinese Medical Association : JCMA 2015
Yen-Huai Lin Hong-Jen Chiou Hsin-Kai Wang Yi-Chen Lai Yi-Hong Chou Cheng-Yen Chang

BACKGROUND Ultrasound (US) elastography can provide information about the hardness of calcification and might help decide treatment strategy. The purpose of this study was to evaluate the hardness of the calcific area within rotator cuffs by US elastography as an aid for the selection of aspiration or fine-needle repeated puncture for the treatment of rotator cuff calcific tendinosis. METHODS...

2014
MARIA MAGDALENA DUMA ANGELICA RITA CHIOREAN MARCO CHIOREAN SORANA DANIELA BOLBOACA MADALINA FLOREA DIANA SORINA FEIER GEORGETA MIHAELA RUSU SILVIU ANDREI SFRANGEU

AIMS To establish the correlations between the ultrasound (US) BI-RADS classification and Tsukuba elastography score when assessing breast lesions. To determine which type of breast lesion (BI-RADS category) would benefit most from an elastographic assessment. PATIENTS AND METHODS The investigated sample of imaging comprised a number of 129 images belonging to 92 subjects examined with a Hita...

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