Search Results - "Rouze, Ned C"

Ultrasonic Shear Wave Elasticity Imaging Sequencing and Data Processing Using a Verasonics Research Scanner by Deng, Yufeng, Rouze, Ned C., Palmeri, Mark L., Nightingale, Kathryn R.

“…Ultrasound elasticity imaging has been developed over the last decade to estimate tissue stiffness. Shear wave elasticity imaging (SWEI) quantifies tissue…”
Get full text

An analytic, Fourier domain description of shear wave propagation in a viscoelastic medium using asymmetric Gaussian sources by Rouze, Ned C, Palmeri, Mark L, Nightingale, Kathryn R

“…Recent measurements of shear wave propagation in viscoelastic materials have been analyzed by constructing the two-dimensional Fourier transform (2D-FT) of the…”
Get full text

Characterization of Viscoelastic Materials Using Group Shear Wave Speeds by Rouze, Ned C., Deng, Yufeng, Trutna, Courtney A., Palmeri, Mark L., Nightingale, Kathryn R.

“…Recent investigations of viscoelastic properties of materials have been performed by observing shear wave propagation following localized, impulsive…”
Get full text

Evaluating the Improvement in Shear Wave Speed Image Quality Using Multidimensional Directional Filters in the Presence of Reflection Artifacts by Lipman, Samantha L., Rouze, Ned C., Palmeri, Mark L., Nightingale, Kathryn R.

“…Shear waves propagating through interfaces where there is a change in stiffness cause reflected waves that can lead to artifacts in shear wave speed (SWS)…”
Get full text

Accounting for the Spatial Observation Window in the 2-D Fourier Transform Analysis of Shear Wave Attenuation by Rouze, Ned C., Deng, Yufeng, Palmeri, Mark L., Nightingale, Kathryn R.

“…Recent measurements of shear wave propagation in viscoelastic materials have been analyzed by constructing the 2-D Fourier transform (2DFT) of the shear wave…”
Get full text

Robust estimation of time-of-flight shear wave speed using a radon sum transformation by Rouze, Ned C, Wang, Michael H, Palmeri, Mark L, Nightingale, Kathryn R

“…Time-of-flight methods allow quantitative measurement of shear wave speed (SWS) from ultrasonically tracked displacements following impulsive excitation in…”
Get full text

Improving the Robustness of Time-of-Flight Based Shear Wave Speed Reconstruction Methods Using RANSAC in Human Liver in vivo by Wang, Michael H, Palmeri, Mark L, Rotemberg, Veronica M, Rouze, Ned C, Nightingale, Kathryn R

“…Abstract The stiffness of tissue can be quantified by measuring the shear wave speed (SWS) within the medium. Ultrasound is a real-time imaging modality…”
Get full text

Analyzing the Impact of Increasing Mechanical Index and Energy Deposition on Shear Wave Speed Reconstruction in Human Liver by Deng, Yufeng, Palmeri, Mark L, Rouze, Ned C, Rosenzweig, Stephen J, Abdelmalek, Manal F, Nightingale, Kathryn R

“…Abstract Shear wave elasticity imaging (SWEI) has found success in liver fibrosis staging. This work evaluates hepatic SWEI measurement success as a function…”
Get full text

Tractable calculation of the Green's tensor for shear wave propagation in an incompressible, transversely isotropic material by Rouze, Ned C, Palmeri, Mark L, Nightingale, Kathryn R

“…Assessing material properties from observations of shear wave propagation following an acoustic radiation force impulse (ARFI) excitation is difficult in…”
Get more information

Noninvasive evaluation of hepatic fibrosis using acoustic radiation force-based shear stiffness in patients with nonalcoholic fatty liver disease by Palmeri, Mark L, Wang, Michael H, Rouze, Ned C, Abdelmalek, Manal F, Guy, Cynthia D, Moser, Barry, Diehl, Anna Mae, Nightingale, Kathryn R

“…Background & Aims Nonalcoholic fatty liver disease (NAFLD), the most common form of chronic liver disease in developed countries, may progress to nonalcoholic…”
Get full text

Full Characterization of in vivo Muscle as an Elastic, Incompressible, Transversely Isotropic Material Using Ultrasonic Rotational 3D Shear Wave Elasticity Imaging by Knight, Anna E., Trutna, Courtney A., Rouze, Ned C., Hobson-Webb, Lisa D., Caenen, Annette, Jin, Felix Q., Palmeri, Mark L., Nightingale, Kathryn R.

“…Using a 3D rotational shear wave elasticity imaging (SWEI) setup, 3D shear wave data were acquired in the vastus lateralis of a healthy volunteer. The innate…”
Get full text

Effect of Graphite Concentration on Shear-Wave Speed in Gelatin-Based Tissue-Mimicking Phantoms by Anderson, Pamela G., Rouze, Ned C., Palmeri, Mark L.

“…Elasticity-based imaging modalities are becoming popular diagnostic tools in clinical practice. Gelatin-based, tissue mimicking phantoms that contain graphite…”
Get full text

Measurement of Viscoelastic Material Model Parameters Using Fractional Derivative Group Shear Wave Speeds in Simulation and Phantom Data by Trutna, Courtney A., Rouze, Ned C., Palmeri, Mark L., Nightingale, Kathryn R.

“…While ultrasound shear wave elastography originally focused on tissue stiffness under the assumption of elasticity, recent work has investigated the higher…”
Get full text

Finite element modeling of impulsive excitation and shear wave propagation in an incompressible, transversely isotropic medium by Rouze, Ned C, Wang, Michael H, Palmeri, Mark L, Nightingale, Kathy R

“…Abstract Elastic properties of materials can be measured by observing shear wave propagation following localized, impulsive excitations and relating the…”
Get full text

Derivation and analysis of viscoelastic properties in human liver: impact of frequency on fibrosis and steatosis staging by Nightingale, Kathryn R., Rouze, Ned C., Rosenzweig, Stephen J., Wang, Michael H., Abdelmalek, Manal F., Guy, Cynthia D., Palmeri, Mark L.

“…Commercially-available shear wave imaging systems measure group shear wave speed (SWS) and often report stiffness parameters applying purely elastic material…”
Get full text

Parameters affecting the resolution and accuracy of 2-D quantitative shear wave images by Rouze, Ned C., Wang, Michael H., Palmeri, Mark L., Nightingale, Kathryn R.

“…Time-of-flight methods allow quantitative measurement of shear wave speed (SWS) from ultrasonically tracked displacements following impulsive acoustic…”
Get full text

Impact of Acoustic Radiation Force Excitation Geometry on Shear Wave Dispersion and Attenuation Estimates by Lipman, Samantha L., Rouze, Ned C., Palmeri, Mark L., Nightingale, Kathryn R.

“…Shear wave elasticity imaging (SWEI) characterizes the mechanical properties of human tissues to differentiate healthy from diseased tissue. Commercial…”
Get full text

Parametric Analysis of SV Mode Shear Waves in Transversely Isotropic Materials Using Ultrasonic Rotational 3-D SWEI by Knight, Anna E, Jin, Felix Q, Paley, Courtney Trutna, Rouze, Ned C, Moavenzadeh, Spencer R, Pietrosimone, Laura S, Palmeri, Mark L, Nightingale, Kathryn R

“…Ultrasonic rotational 3-D shear wave elasticity imaging (SWEI) has been used to induce and evaluate multiple shear wave modes, including both the shear…”
Get full text

Quantifying Image Quality Improvement Using Elevated Acoustic Output in B-Mode Harmonic Imaging by Deng, Yufeng, Palmeri, Mark L., Rouze, Ned C., Trahey, Gregg E., Haystead, Clare M., Nightingale, Kathryn R.

“…Tissue harmonic imaging has been widely used in abdominal imaging because of its significant reduction in acoustic noise compared with fundamental imaging…”
Get full text

Repeatability of Rotational 3-D Shear Wave Elasticity Imaging Measurements in Skeletal Muscle by Paley, Courtney Trutna, Knight, Anna E., Jin, Felix Q., Moavenzadeh, Spencer R., Pietrosimone, Laura S., Hobson-Webb, Lisa D., Rouze, Ned C., Palmeri, Mark L., Nightingale, Kathryn R.

“…Shear wave elasticity imaging (SWEI) usually assumes an isotropic material; however, skeletal muscle is typically modeled as a transversely isotropic material…”
Get full text