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Elastography ultrasound for breast lesions: fat-to-lesion strain ratio vs gland-to-lesion strain ratio

European Radiology, 2014
To compare the diagnostic performance of the fat-to-lesion strain ratio (FLR) and gland-to-lesion strain ratio (GLR) in the diagnosis of breast lesions.This was an institutional ethics committee approved prospective study. One hundred and ninety-three breast lesions in 193 women (mean age, 46.03 ± 13.60 years, range 18-82 years) were examined with ...
JianQiao, Zhou   +5 more
openaire   +2 more sources

A preliminary prospective study to compare the diagnostic performance of assist strain ratio versus manual strain ratio

Journal of Medical Ultrasonics, 2015
The objectives of this study were to demonstrate the non-inferiority of assist strain ratio (ASR)-a newly developed application tool-to manual strain ratio (MSR)-a currently available standard diagnostic tool-and to calculate the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of MSR and ASR ...
Ei, Ueno   +4 more
openaire   +2 more sources

Cervical elastography strain ratio and strain pattern for the prediction of a successful induction of labour

Journal of Perinatal Medicine, 2020
Abstract Objectives The aim of this study was to introduce cervical strain elastography to objectively assess the cervical tissue transformation process during induction of labour (IOL) and to evaluate the potential of cervical elastography as a predictor of successful IOL.
Marlit Karen, Strobel   +8 more
openaire   +2 more sources

Variation of plastic strain ratio with strain level in steels

Metallurgical Transactions A, 1981
The behavior described by Hu of a sharply decreasingr-value as the strain increased in a tensile test has been confirmed in two strongly textured steels, but only for conditions of discontinuous yielding. It does not occur in the absence of interstitial elements when yielding is homogeneous.
R. P. Arthey, W. B. Hutchinson
openaire   +1 more source

Auto strain ratio system for the quality control of breast strain elastography

Journal of Medical Ultrasonics, 2017
To determine the reproducibility, accuracy, and quantitative values of the auto strain ratio system (ASRS)-a newly developed strain elastography-based program.First, the accuracy of ASRS was verified using a breast phantom. A prospective clinical study was then performed in patients.
Kazutaka, Nakashima   +2 more
openaire   +2 more sources

Recoverable elastic strain and swelling ratio

1993
If a viscoelastic body is in a stressed state, then relaxation of all constraints will cause it to assume a different configuration in the final unstressed condition. Thus one sees a general elastic recovery. The term recoverable strain is usually used more restrictively.
openaire   +1 more source

Relation between limiting drawing ratio and plastic strain ratio

Journal of Materials Science Letters, 1984
Calcul de l'expression du rapport d'etirage limite base sur une equation qui est une generalisation du critere de rendement de ...
openaire   +1 more source

A Clinical Study Comparing the Diagnostic Performance of Assist Strain Ratio Against Manual Strain Ratio in Ultrasound Breast Elastography

Ultrasound Quarterly, 2019
Objective Strain ratio (SR) is a semiquantitative parameter in differentiating benign from malignant tumors in breast ultrasound elastography. Currently, SR is computed manually and, thus, user dependent. The objective of this study was to evaluate the performance of a new tool assist strain ratio (ASR) and determine how it ...
Richard G, Barr, Ravi A, Managuli
openaire   +2 more sources

Shear modulus reconstruction by ultrasonically measured strain ratio

Journal of Medical Ultrasonics, 2007
In addition to a description of our three previously developed one-dimensional (1D) methods from the viewpoint of shear modulus reconstruction using the strain ratio, two new methods for stabilizing the 1D methods are described, together with their limitations.
Chikayoshi, Sumi, Hidenori, Matsuzawa
openaire   +2 more sources

Value of strain-ratio on thyroid real-time sonoelastography

La radiologia medica, 2014
The aim of this study was to determine the accuracy of elastosonography in the differential diagnosis of thyroid nodules using a qualitative [evaluation of the stiffness score (SS)] and quantitative assessment [evaluation of the strain ratio (SR)].In our single-centre retrospective study, 368 patients were enroled between December 2010 and March 2012 ...
GUAZZARONI, MANLIO   +5 more
openaire   +3 more sources

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