NDLI: On the effects of reflected waves in transient shear wave elastography

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IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control - Front cover

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On the effects of reflected waves in transient shear wave elastography

Enhanced electrical properties of textured NBBT ceramics derived from the screen printing technique

Structure and electrical properties of Na_0.5Bi_0.5TiO₃ ferroelectric thick films derived from a polymer modified sol-gel method

Thickness-shear and thickness-twist vibrations of an AT-Cut quartz mesa resonator

Noninvasive estimation of dynamic pressures in vitro and in vivo using the subharmonic response from microbubbles

Image reconstruction in intravascular photoacoustic imaging

Filter-based compounded delay estimation with application to strain imaging

Diagnostic ultrasound tooth imaging using fractional fourier transform

A quantitative and automatic echographic method for real-time localization of endovascular devices

Effects of cell spatial organization and size distribution on ultrasound backscattering

Two-dimensional manipulation of micro particles by acoustic radiation pressure in a heptagon cell

Coupled extensional vibrations of longitudinally polarized piezoceramic strips

Phononic plate waves

Acoustic, piezoelectric, and dielectric nonlinearities of AlN in coupled resonator filters for high RF power levels

Longitudinal wave scattering from rough crack-like defects

Transformation of acoustic waves in periodic metal grating sandwiched between piezoelectric and dielectric

Suppression of transverse-mode spurious responses for saw resonators on SiO₂/Al/LiNbO₃ structure by selective removal of SiO₂

Design of highly uniform spool and bar horns for ultrasonic bonding

A high-frequency linear ultrasonic array utilizing an interdigitally bonded 2-2 piezo-composite

Modeling of transient ultrasonic wave propagation using the distributed point

Mode excitation efficiency for contour vibrations of piezoelectric resonators

Properties of shear horizontal acoustic plate modes in BT-Cut quartz

Ultrasound-based radial and longitudinal strain estimation of the carotid artery: a feasibility study

High retention of polarization in polycrystalline M/PZT/M capacitors in the presence of depolarization field near grain boundaries

The applicability of ultrasound dynamic receive beamformers to photoacoustic imaging

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On the effects of reflected waves in transient shear wave elastography

Content Provider	IEEE Xplore Digital Library
Author	Deffieux, T. Gennisson, J.-L. Bercoff, J. Tanter, M.
Copyright Year	1986
Abstract	In recent years, novel quantitative techniques have been developed to provide noninvasive and quantitative stiffness images based on shear wave propagation. Using radiation force and ultrafast ultrasound imaging, the supersonic shear imaging technique allows one to remotely generate and follow a transient plane shear wave propagating in vivo in real time. The tissue shear modulus, i.e., its stiffness, can then be estimated from the shear wave local velocity. However, because the local shear wave velocity is estimated using a time-of-flight approach, reflected shear waves can cause artifacts in the estimated shear velocity because the incident and reflected waves propagate in opposite directions. Such effects have been reported in the literature as a potential drawback of elastography techniques based on shear wave speed, particularly in the case of high stiffness contrasts, such as in atherosclerotic plaque or stiff lesions. In this letter, we present our implementation of a simple directional filter, previously used for magnetic resonance elastography, which separates the forward- and backward-propagating waves to solve this problem. Such a directional filter could be applied to many elastography techniques based on the local estimation of shear wave speed propagation, such as acoustic radiation force imaging (ARFI), shearwave dispersion ultrasound vibrometry (SDUV), needle-based elastography, harmonic motion imaging, or crawling waves when the local propagation direction is known and high-resolution spatial and temporal data are acquired.
File Size	596201
File Format	PDF
ISSN	08853010
Volume Number	58
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Imaging Transient analysis Acoustics Ultrasonic imaging In vivo Propagation Magnetic separation
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Instrumentation Electrical and Electronic Engineering

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