Search Results - "Nightingale, K.R"

Quantifying Hepatic Shear Modulus In Vivo Using Acoustic Radiation Force by Palmeri, M.L, Wang, M.H, Dahl, J.J, Frinkley, K.D, Nightingale, K.R

“…Abstract The speed at which shear waves propagate in tissue can be used to quantify the shear modulus of the tissue. As many groups have shown, shear waves can…”
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A finite-element method model of soft tissue response to impulsive acoustic radiation force by Palmeri, M.L., Sharma, A.C., Bouchard, R.R., Nightingale, R.W., Nightingale, K.R.

“…Several groups are studying acoustic radiation force and its ability to image the mechanical properties of tissue. Acoustic radiation force impulse (ARFI)…”
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On the thermal effects associated with radiation force imaging of soft tissue by Palmeri, M.L., Nightingale, K.R.

“…Several laboratories are investigating the use of acoustic radiation force to image the mechanical properties of tissue. Acoustic Radiation Force Impulse…”
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A parallel tracking method for acoustic radiation force impulse imaging by Dahl, J.J., Pinton, G.F., Palmeri, M.L., Agrawal, V., Nightingale, K.R., Trahey, G.E.

“…Radiation force-based techniques have been developed by several groups for imaging the mechanical properties of tissue. Acoustic radiation force impulse (ARFI)…”
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Dynamic mechanical response of elastic spherical inclusions to impulsive acoustic radiation force excitation by Palmeri, M.L., McAleavey, S.A., Fong, K.L., Trahey, G.E., Nightingale, K.R.

“…Acoustic radiation force impulse imaging has been used clinically to study the dynamic response of lesions relative to their background material to focused,…”
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Acoustic radiation force impulse imaging of myocardial radiofrequency ablation: initial in vivo results by Fahey, B.J., Nightingale, K.R., McAleavey, S.A., Palmeri, M.L., Wolf, P.D., Trahey, G.E.

“…Acoustic radiation force impulse (ARFI) imaging techniques were used to monitor radiofrequency (RF) ablation of ovine cardiac tissue in vivo. Additionally,…”
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Estimates of echo correlation and measurement bias in acoustic radiation force impulse imaging by McAleavey, S.A., Nightingale, K.R., Trahey, G.E.

“…Acoustic radiation force impulse (ARFI) imaging is a novel imaging modality in which pulses from a diagnostic ultrasound scanner are used to displace tissue…”
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A preliminary evaluation of the effects of primary and secondary radiation forces on acoustic contrast agents by Dayton, P.A., Morgan, K.E., Klibanov, A.L., Brandenburger, G., Nightingale, K.R., Ferrara, K.W.

“…Primary and secondary radiation forces result from pressure gradients in the incident and scattered ultrasonic fields. These forces and their dependence on…”
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A finite element model for simulating acoustic streaming in cystic breast lesions with experimental validation by Nightingale, K.R., Trahey, G.E.

“…Streaming detection is an ultrasonic technique that can be used to distinguish fluid-filled lesions, or cysts, from solid lesions. With this technique, high…”
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Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media by Palmeri, Mark L., McAleavey, Stephen A., Trahey, Gregg E., Nightingale, Kathryn R.

“…The use of ultrasonic methods to track the tissue deformation generated by acoustic radiation force is subject to jitter and displacement underestimation…”
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Towards advanced welding methods for the ITER vacuum vessel sectors by Jones, L.P., Aubert, P., Avilov, V., Coste, F., Daenner, W., Jokinen, T., Nightingale, K.R., Wykes, M.

“…The problem of joining the International Thermonuclear Experimental Reactor (ITER) vacuum vessel (VV) sectors, considering the tolerance requirements of the…”
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Speckle decorrelation due to two-dimensional flow gradients by Friemel, B.H., Bohs, L.N., Nightingale, K.R., Trahey, G.E.

“…The performance of ultrasonic velocity estimation methods is degraded by speckle decorrelation, the change in received echoes over time. Because ultrasonic…”
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Acoustic radiation force based quantification of tissue shear modulus within the region of excitation by Palmeri, M.L., Xu, D., Liang Zhai, Nightingale, K.R.

“…The speed of shear wave propagation in tissue is directly related to the tissue's shear modulus. Shear waves can be generated in tissue using focused,…”
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4K-5 Shear Wave Velocity Estimation Using Acoustic Radiation Force Impulsive Excitation in Liver In Vivo by Nightingale, K.R., Liang Zhai, Dahl, J.J., Frinkley, K.D., Palmeri, M.L.

“…Acoustic radiation force can be used to mechanically excite tissue in remote, focused locations, and the tissue response can be monitored using ultrasonic…”
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Acoustic radiation force impulse imaging of in vivo breast masses by Sharma, A.C., Soo, M.S., Trahey, G.E., Nightingale, K.R.

“…Acoustic radiation force impulse (ARFI) imaging utilizes brief, high energy, focused acoustic pulses to generate radiation force in tissue, and conventional…”
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7B-6 Dependence of In Vivo, Radiation Force Derived Hepatic Shear Modulus Estimates on Imaging Approach: Intercostal vs. Subcostal by Palmeri, M.L., Wang, M.H., Frinkley, K.D., Nightingale, K.R., Abdelmalek, M.F., Diehl, A.M.

“…The speed at which shear waves propagate can be used to quantify the shear modulus of tissue. Focused, impulsive, acoustic radiation force excitations can be…”
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7B-4 In-Vivo Staging of Liver Fibrosis in a Rat Model Using Acoustic Radiation Force by Wang, M.H., Hedlund, L.W., Palmeri, M.L., Guy, C.D., Liu Yang, Diehl, A.M., Nightingale, K.R.

“…Liver fibrosis is currently staged using needle biopsy, a highly invasive procedure with a number of disadvantages. Measurement of liver stiffness changes…”
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Robust hepatic shear modulus reconstruction using acoustic radiation force and RANSAC by Wang, M.H., Palmeri, M.L., Rotemberg, V.M., Rouze, N.C., Nightingale, K.R.

“…Liver stiffness may be useful for the staging and management of hepatic fibrosis. Liver shear modulus can be quantified by measuring the shear wave speed (SWS)…”
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Investigating the effects of viscosity on focused, impulsive, acoustic radiation force induced shear wave morphology by Wang, M.H., Palmeri, M.L., Rouze, N.C., Nightingale, K.R., Hobson, M.A.

“…The effect of dispersion on the morphology of impulsive acoustic radiation force induced shear waves propagating in viscoelastic (VE) media is investigated…”
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Thermal effects associated with acoustic radiation force impulse imaging by Palmeri, M.L., Nightingale, K.R.

“…Acoustic radiation force impulse (ARFI) imaging uses brief, high-intensity, focused ultrasound pulses to generate radiation force in tissue. The absorption of…”
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