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European Journal of Gastroenterology & Hepatology, 2022
Objective We aimed to evaluate the agreement/accuracy of point shear-wave elastography (p-SWE) and 2D-shear-wave elastography (2D-SWE) for liver fibrosis staging using transient elastography (TE) as the reference. Methods This retrospective study analyzed data from people with ...
Flavia, Fernandes +8 more
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Objective We aimed to evaluate the agreement/accuracy of point shear-wave elastography (p-SWE) and 2D-shear-wave elastography (2D-SWE) for liver fibrosis staging using transient elastography (TE) as the reference. Methods This retrospective study analyzed data from people with ...
Flavia, Fernandes +8 more
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The Journal of the Acoustical Society of America, 2012
Shear wave imaging is provided in medical diagnostic ultrasound. A region is imaged to determine a location in which to calculate shear velocity. The shear velocity is estimated for the location. The imaging may guide the identification of the location, reducing the time to determine useful shear information.
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Shear wave imaging is provided in medical diagnostic ultrasound. A region is imaged to determine a location in which to calculate shear velocity. The shear velocity is estimated for the location. The imaging may guide the identification of the location, reducing the time to determine useful shear information.
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Shear wave transmissivity measurement by color Doppler shear wave imaging
Japanese Journal of Applied Physics, 2016Abstract Shear wave elastography is a useful method for evaluating tissue stiffness. We have proposed a novel shear wave imaging method (color Doppler shear wave imaging: CD SWI), which utilizes a signal processing unit in ultrasound color flow imaging in order to detect the shear wave wavefront in real time.
Yoshiki Yamakoshi +4 more
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Shear Wave Imaging of Breast Tissue by Color Doppler Shear Wave Elastography
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2017Shear wave elastography is a distinctive method to access the viscoelastic characteristic of the soft tissue that is difficult to obtain by other imaging modalities. This paper proposes a novel shear wave elastography [color Doppler shear wave imaging (CD SWI)] for breast tissue.
Yoshiki Yamakoshi +5 more
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Estimation of seabed shear-wave velocity profiles using shear-wave source data
The Journal of the Acoustical Society of America, 2013This paper estimates seabed shear-wave velocity profiles and their uncertainties using interface-wave dispersion curves extracted from data generated by a shear-wave source. The shear-wave source generated a seismic signature over a frequency range between 2 and 60 Hz and was polarized in both in-line and cross-line orientations. Low-frequency Scholte-
Hefeng, Dong +2 more
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Shear wave logging using guided waves
The Journal of the Acoustical Society of America, 1989The shear wave velocity of the formation is determined by logging the fastest component of the guided wave generated by the generating means. This method is advantageous for logging the shear wave velocities of soft formations. If the generating means of a multipole acoustic logging device radiates at frequencies including a critical frequency, the ...
Graham A. Winbow +2 more
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Seismic Shear Waves in Engineering
Journal of the Geotechnical Engineering Division, 1974Measurements of seismic shear wave velocity and absorption coefficient can find use in soil and rock mechanics, foundation studies, structures, slope stability analysis, and the determination of dynamic elastic moduli. Shear waves in engineering studies must be separated from compressional, Rayleigh, and Love wave arrivals.
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Shear Wave Propagation in Rocks
Nature, 1971WE have demonstrated striking similarities in elastic wave propagation through rocks and single crystals in recent experiments. In particular, we find that two shear waves with displacements perpendicular to one another and with differing velocities are often propagated through rocks. This is illustrated in Fig.
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Ultrasound in Medicine & Biology, 2018
Elastography is a modality that estimates tissue stiffness and, thus, provides useful information for clinical diagnosis. Attention has focused on the measurement of shear wave propagation; however, many methods assume shear wave propagation is unidirectional and aligned with the lateral imaging direction.
Juvenal, Ormachea +2 more
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Elastography is a modality that estimates tissue stiffness and, thus, provides useful information for clinical diagnosis. Attention has focused on the measurement of shear wave propagation; however, many methods assume shear wave propagation is unidirectional and aligned with the lateral imaging direction.
Juvenal, Ormachea +2 more
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Three-wave lateral shearing interferometer
Applied Optics, 1993The three-wave lateral shearing interferometer is an interferometer specially designed for optical testing. It determines three noncollinear phase gradients from one single-fringe pattern. From these quantities, two orthogonal derivatives and the measurement error are estimated, allowing the reconstruction of the aberrated wave front.
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