Search Results - "Marutyan, Karen R"

Interference between wave modes may contribute to the apparent negative dispersion observed in cancellous bone by ANDERSON, Christian C, MARUTYAN, Karen R, HOLLAND, Mark R, WEAR, Keith A, MILLER, James G

“…Previous work has shown that ultrasonic waves propagating through cancellous bone often exhibit a linear-with-frequency attenuation coefficient, but a decrease…”
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Anomalous negative dispersion in bone can result from the interference of fast and slow waves by Marutyan, Karen R, Holland, Mark R, Miller, James G

“…The goal of this work was to show that the apparent negative dispersion of ultrasonic waves propagating in bone can arise from interference between fast and…”
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Bayesian estimation of the underlying bone properties from mixed fast and slow mode ultrasonic signals by Marutyan, Karen R., Bretthorst, G. Larry, Miller, James G.

“…We recently proposed that the observed apparent negative dispersion in bone can arise from the interference between fast wave and slow wave modes, each…”
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Estimating myocardial attenuation from M-mode ultrasonic backscatter by Baldwin, Steven L, Marutyan, Karen R, Yang, Min, Wallace, Kirk D, Holland, Mark R, Miller, James G

“…The objective of this investigation was to determine whether measurements of myocardial attenuation can be obtained from analyses of M-mode images. We…”
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Negative dispersion in bone : The role of interference in measurements of the apparent phase velocity of two temporally overlapping signals by BAUER, Adam Q, MARUTYAN, Karen R, HOLLAND, Mark R, MILLER, James G

“…In this study the attenuation coefficient and dispersion (frequency dependence of phase velocity) are measured using a phase sensitive (piezoelectric) receiver…”
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Is the Kramers-Kronig relationship between ultrasonic attenuation and dispersion maintained in the presence of apparent losses due to phase cancellation? by Bauer, Adam Q., Marutyan, Karen R., Holland, Mark R., Miller, James G.

“…Phase cancellation effects can compromise the integrity of ultrasonic measurements performed with phase sensitive receiving apertures. A lack of spatial…”
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Measurements of the anisotropy of ultrasonic attenuation in freshly excised myocardium by BALDWIN, Steven L, MARUTYAN, Karen R, MIN YANG, WALLACE, Kirk D, HOLLAND, Mark R, MILLER, James G

“…Echocardiography requires imaging of the heart with sound propagating at varying angles relative to the predominant direction of the myofibers. The degree of…”
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Measurements of the anisotropy of ultrasonic velocity in freshly excised and formalin-fixed myocardial tissue by Baldwin, Steven L., Yang, Min, Marutyan, Karen R., Wallace, Kirk D., Holland, Mark R., Miller, James G.

“…The objective of this study was to quantify the anisotropy of ultrasonic velocity in freshly excised myocardial tissue and to examine the effects of…”
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Elastic stiffness coefficients (c11, c33, and c13) for freshly excised and formalin-fixed myocardium from ultrasonic velocity measurements by MIN YANG, BALDWIN, Steven L, MARUTYAN, Karen R, WALLACE, Kirk D, HOLLAND, Mark R, MILLER, James G

“…The goal of this study was to measure elastic stiffness coefficients of freshly excised and subsequently formalin-fixed myocardial tissue. Our approach was to…”
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The frequency dependence of ultrasonic velocity and the anisotropy of dispersion in both freshly excised and formalin-fixed myocardium by Marutyan, Karen R, Yang, Min, Baldwin, Steven L, Wallace, Kirk D, Holland, Mark R, Miller, James G

“…The objectives of this study were to measure the frequency dependence of the ultrasonic velocity in myocardium and to quantify the frequency dependence of…”
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Ultrasonic Detection of the Anisotropy of Protein Cross Linking in Myocardium at Diagnostic Frequencies by Baldwin, S.L., Min Yang, Marutyan, K.R., Wallace, K.D., Holland, M.R., Miller, J.G.

“…Increased myocardial stiffness in aging and diabetes that may result in pathologies such as diastolic dysfunction has been attributed, in part, to an increase…”
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Influence of Bright Intramural Echoes on Estimates of Ultrasonic Attenuation from Backscattered Ultrasound in Excised Myocardium by Baldwin, Steven L., Yang, Min, Marutyan, Karen R., Wallace, Kirk D., Holland, Mark R., Miller, James G.

“…The purpose of this study was to quantitate the influence of bright intramural echoes on estimates of myocardial attenuation from analyses of backscattered…”
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Anomalous negative dispersion in bone can result from the interferenceof fast and slow waves by Marutyan, Karen R., Holland, Mark R., Miller, James G.

“…The goal of this work was to show that the apparent negative dispersion of ultrasonic waves propagating in bone can arise from interference between fast and…”
Get full text

Is the Kramers-Kronig causal relationship between ultrasonic attenuation and dispersion maintained when phase aberrations distort the field incident on a phase sensitive aperture? by Bauer, Adam Q., Marutyan, Karen R., Holland, Mark R., Miller, James G.

“…The objective of this investigation was to determine whether the causality-induced link between ultrasonic attenuation and dispersion remains valid when the…”
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Experimental confirmation of negative dispersion and Bayesian inversion of multimode propagation in a bone-mimicking phantom by Bauer, Adam Q., Anderson, Christian C., Marutyan, Karen R., Bretthorst, G Larry, Wear, Keith A., Holland, Mark R., Miller, James G.

“…Previously we demonstrated using numerical simulations that negative dispersion observed in bone can result from the interference of two propagating modes,…”
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Causal dispersion relations applied to measurements on soft and hard biological tissue by Marutyan, Karen R

“…The broad theme of this dissertation is concerned with the application of causal dispersion relations the ultrasonic propagation in soft and hard biological…”
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Ultrasonic detection of the anisotropy of protein cross-linking in myocardium by Baldwin, S.L., Min Yang, Marutyan, K.R., Wallace, K.D., Holland, M.R., Miller, J.G.

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