Search Results - "TRAHEY, GREGG E."

Intrinsic Tradeoffs in Multi-Covariate Imaging of Sub-Resolution Targets by Morgan, Matthew R., Trahey, Gregg E., Walker, William F.

“…Multi-covariate Imaging of Sub-resolution Targets (MIST) is an estimation-based method of imaging the statistics of diffuse scattering targets. MIST estimates…”
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Single- and Multiple-Track-Location Shear Wave and Acoustic Radiation Force Impulse Imaging: Matched Comparison of Contrast, Contrast-to-Noise Ratio and Resolution by Hollender, Peter J, Rosenzweig, Stephen J, Nightingale, Kathryn R, Trahey, Gregg E

“…Abstract Acoustic radiation force impulse imaging and shear wave elasticity imaging (SWEI) use the dynamic response of tissue to impulsive mechanical stimulus…”
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Short-Lag Spatial Coherence Imaging of Cardiac Ultrasound Data: Initial Clinical Results by Lediju Bell, Muyinatu A, Goswami, Robi, Kisslo, Joseph A, Dahl, Jeremy J, Trahey, Gregg E

“…Abstract Short-lag spatial coherence (SLSC) imaging is a novel beamforming technique that reduces acoustic clutter in ultrasound images. A clinical study was…”
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Harmonic tracking of acoustic radiation force-induced displacements by Doherty, Joshua R., Dahl, Jeremy J., Trahey, Gregg E.

“…Ultrasound-based elasticity imaging methods rely upon accurate estimates of tissue deformation to characterize the mechanical properties of soft tissues. These…”
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Bayesian speckle tracking. Part II: biased ultrasound displacement estimation by Byram, B., Trahey, G. E., Palmeri, M.

“…Ultrasonic displacement estimates have numerous clinical uses, including blood flow estimation, elastography, therapeutic guidance, and acoustic radiation…”
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Quantifying Myocardial Contractility Changes Using Ultrasound-Based Shear Wave Elastography by Vejdani-Jahromi, Maryam, MD, Freedman, Jenna, BS, Nagle, Matthew, BS, Kim, Young-Joong, BE, Trahey, Gregg E., PhD, Wolf, Patrick D., PhD

“…Background Myocardial contractility, a significant determinant of cardiac function, is valuable for diagnosis and evaluation of treatment in cardiovascular…”
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Bayesian speckle tracking. Part I: an implementable perturbation to the likelihood function for ultrasound displacement estimation by Byram, B., Trahey, G. E., Palmeri, M.

“…Accurate and precise displacement estimation has been a hallmark of clinical ultrasound. Displacement estimation accuracy has largely been considered to be…”
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Lag-One Coherence as a Metric for Ultrasonic Image Quality by Long, Will, Bottenus, Nick, Trahey, Gregg E.

“…Reliable assessment of image quality is an important but challenging task in complex imaging environments such as those encountered in vivo. To address this…”
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Spatial Ambiguity Correction in Coherence-Based Average Sound Speed Estimation by Ahmed, Rifat, Trahey, Gregg E.

“…Sound speed estimation can potentially correct the focusing errors in medical ultrasound. Maximizing the echo spatial coherence as a function of beamforming…”
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Acoustic radiation force impulse imaging of the abdomen: demonstration of feasibility and utility by Fahey, Brian J, Nightingale, Kathryn R, Nelson, Rendon C, Palmeri, Mark L, Trahey, Gregg E

“…The feasibility of utilizing acoustic radiation force impulse (ARFI) imaging to assess the mechanical properties of abdominal tissues was investigated. The…”
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Intracardiac acoustic radiation force impulse imaging: A novel imaging method for intraprocedural evaluation of radiofrequency ablation lesions by Eyerly, Stephanie A., MS, Bahnson, Tristram D., MD, FHRS, Koontz, Jason I., MD, PhD, Bradway, David P., BS, Dumont, Douglas M., PhD, Trahey, Gregg E., PhD, Wolf, Patrick D., PhD

“…Background Arrhythmia recurrence after cardiac radiofrequency ablation (RFA) for atrial fibrillation has been linked to conduction through discontinuous lesion…”
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Incoherent Clutter Suppression Using Lag-One Coherence by Long, Will, Bottenus, Nick, Trahey, Gregg E.

“…The lag-one coherence (LOC), derived from the correlation between the nearest-neighbor channel signals, provides a reliable measure of clutter which, under…”
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The Impact of Physiological Motion on Tissue Tracking During Radiation Force Imaging by Fahey, Brian J, Palmeri, Mark L, Trahey, Gregg E

“…Abstract The effect of physiological motion on the quality of radiation force elasticity images has been investigated. Experimental studies and simulated…”
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Acoustic radiation force impulse imaging of the mechanical properties of arteries: in vivo and ex vivo results by Trahey, Gregg E, Palmeri, Mark L, Bentley, Rex C, Nightingale, Kathryn R

“…We present results of a pilot study of ex vivo and in vivo acoustic radiation force impulse (ARFI) imaging demonstrating measurements of the mechanical…”
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Frequency-Dependent Spatial Coherence in Conventional and Chirp Transmissions by Long, James, Bottenus, Nick, Trahey, Gregg E.

“…The development of adaptive imaging techniques is contingent on the accurate and repeatable characterization of ultrasonic image quality. Adaptive transmit…”
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Large Array Deep Abdominal Imaging in Fundamental and Harmonic Mode by Ahmed, Rifat, Foiret, Josquin, Ferrara, Katherine, Trahey, Gregg

“…Deep abdominal images suffer from poor diffraction-limited lateral resolution. Extending the aperture size can improve resolution. However, phase distortion…”
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Reverberation Clutter Suppression Using 2-D Spatial Coherence Analysis by Ahmed, Rifat, Bottenus, Nick, Long, James, Trahey, Gregg E.

“…Diffuse reverberation clutter often significantly degrades the visibility of abdominal structures. Reverberation clutter acts as a temporally stationary haze…”
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MimickNet, Mimicking Clinical Image Post- Processing Under Black-Box Constraints by Huang, Ouwen, Long, Will, Bottenus, Nick, Lerendegui, Marcelo, Trahey, Gregg E., Farsiu, Sina, Palmeri, Mark L.

“…Image post-processing is used in clinical-grade ultrasound scanners to improve image quality (e.g., reduce speckle noise and enhance contrast). These…”
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Multi-covariate Imaging of Sub-resolution Targets by Morgan, Matthew R., Trahey, Gregg E., Walker, William F.

“…Conventional B-mode ultrasound imaging assumes that targets consist of collections of point scatterers. Diffraction, however, presents a fundamental limit on a…”
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Acoustic radiation force impulse imaging of thermally- and chemically-induced lesions in soft tissues: preliminary ex vivo results by Fahey, Brian J, Nightingale, Kathryn R, Stutz, Deborah L, Trahey, Gregg E

“…The ability of acoustic radiation force impulse (ARFI) imaging to visualize thermally- and chemically-induced lesions in soft tissues was investigated. Lesions…”
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