Search Results - "Foster, F.S."

Nonlinear Contrast Imaging with an Array-Based Micro-Ultrasound System by Needles, A, Arditi, M, Rognin, N.G, Mehi, J, Coulthard, T, Bilan-Tracey, C, Gaud, E, Frinking, P, Hirson, D, Foster, F.S

“…Abstract The main goal of this study was to determine the optimal strategy for a real-time nonlinear contrast mode for small-animal imaging at high…”
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A Method for Differentiating Targeted Microbubbles in Real Time Using Subharmonic Micro-Ultrasound and Interframe Filtering by Needles, A, Couture, O, Foster, F.S

“…Abstract This study introduces a new method for differentiating targeted microbubbles in the presence of flowing microbubbles and tissue using…”
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High frequency nonlinear B-scan imaging of microbubble contrast agents by Goertz, D.E., Cherin, E., Needles, A., Karshafian, R., Brown, A.S., Burns, P.N., Foster, F.S.

“…It was previously shown that it is possible to produce nonlinear scattering from microbubble contrast agents using transmit frequencies in the 14-32 MHz range,…”
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Fabrication and Performance of a 40-MHz Linear Array Based on a 1-3 Composite with Geometric Elevation Focusing by Brown, J.A., Foster, F.S., Needles, A., Cherin, E., Lockwood, G.R.

“…The fabrication and performance of a 256-element high-frequency (40-MHz) linear array is described. The array was fabricated using a high-frequency 1-3…”
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A new ultrasound instrument for in vivo microimaging of mice by Foster, F S, Zhang, M Y, Zhou, Y Q, Liu, G, Mehi, J, Cherin, E, Harasiewicz, K A, Starkoski, B G, Zan, L, Knapik, D A, Adamson, S L

“…We report here on the design and evaluation of the first high-frequency ultrasound (US) imaging system specifically designed for microimaging of the mouse…”
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A history of medical and biological imaging with polyvinylidene fluoride (PVDF) transducers by Foster, F.S., Harasiewicz, K.A., Sherar, M.D.

“…Polyvinylidene fluoride (PVDF) is a ferroelectric polymer with unique properties suitable for use in a wide range of medical and biological imaging…”
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Performance and Characterization of New Micromachined High-Frequency Linear Arrays by Lukacs, M., Jianlma Yin, Guofeng Pang, Garcia, R.C., Cherin, E., Williams, R., Mehi, J., Foster, F.S.

“…A new approach for fabricating high frequency (>20 MHz) linear array transducers, based on laser micromachining, has been developed. A 30 MHz, 64-element,…”
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High-Frequency Subharmonic Pulsed-Wave Doppler and Color Flow Imaging of Microbubble Contrast Agents by Needles, A, Goertz, D.E, Karshafian, R, Cherin, E, Brown, A.S, Burns, P.N, Foster, F.S

“…Abstract A recent study has shown the feasibility of subharmonic (SH) flow imaging at a transmit frequency of 20 MHz. This paper builds on these results by…”
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Reflection from bound microbubbles at high ultrasound frequencies by Couture, O., Sprague, M.R., Cherin, E., Burns, P.N., Foster, F.S.

“…Targeted contrast agents and ultrasound imaging are now used in combination for the assessment and tracking of biomarkers in animal models in vivo. These…”
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Golay Pulse Encoding for Microbubble Contrast Imaging in Ultrasound by Leavens, C., Williams, R., Foster, F.S., Burns, P.N., Sherar, M.D.

“…We present a technique that uses Golay phase encoding, pulse inversion, and amplitude modulation (GPIAM) for microbubble contrast agent imaging with…”
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High-frequency, nonlinear flow imaging of microbubble contrast agents by Goertz, D.E., Needles, A., Burns, P.N., Foster, F.S.

“…It has been shown that nonlinear scattering can be stimulated from microbubble contrast agents at high-transmit frequencies (14-32 MHz). This work was extended…”
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Multifrequency ultrasound transducers for conformal interstitial thermal therapy by Chopra, R., Luginbuhl, C., Foster, F.S., Bronskill, M.J.

“…Control over the pattern of thermal damage generated by interstitial ultrasound heating applicators can be enhanced by changing the ultrasound frequency during…”
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Optimizing the radiation pattern of sparse periodic linear arrays by Lockwood, G.R., Pai-Chi Li, O'Donnell, M., Foster, F.S.

“…We have developed a method for designing sparse periodic arrays. Grating lobes in the two-way radiation pattern are avoided by using different element spacings…”
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Ultrasonic detection and developmental changes in calcification of the placenta during normal pregnancy in mice by Akirav, C., Lu, Y., Mu, J., Qu, D.W., Zhou, Y.Q., Slevin, J., Holmyard, D., Foster, F.S., Adamson, S.L.

“…High resolution ultrasound imaging of the mouse placenta during development revealed highly echogenic foci localized near the materno-placental interface in…”
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Interdigital pair bonding for high frequency (20-50 MHz) ultrasonic composite transducers by Ruibin Liu, Harasiewicz, K.A., Foster, F.S.

“…Interdigital pair bonding is a novel methodology that enables the fabrication of high frequency piezoelectric composites with high volume fractions of the…”
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A 100-200 MHz ultrasound biomicroscope by Knspik, D.A., Starkoski, B., Pavlin, C.J., Foster, F.S.

“…The development of higher frequency ultrasound imaging systems affords a unique opportunity to visualize living tissue at the microscopic level. This work was…”
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Optimizing the radiation pattern of sparse periodic two-dimensional arrays by Lookwood, G.R., Foster, F.S.

“…A method for reducing the number of elements in a 2-D array while minimizing degradation of the beam forming properties is described. The method relies on…”
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Ultrasound characterization of coronary artery wall in vitro using temperature-dependent wave speed by Pereira, F.R., Machado, J.C., Foster, F.S.

“…Temperature dependence of the speed of sound, /spl part/c//spl part/T, is examined as a parameter to characterize tissue-equivalent phantoms and coronary…”
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Quantifying tissue damage due to focused ultrasound heating observed by MRI by Graham, S.J., Chen, L., Leitch, M., Peters, R.D., Bronskill, M.J., Foster, F.S., Henkelman, R.M., Plewes, D.B.

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High Frequency Acoustic Parameters of Human and Bovine Articular Cartilage following Experimentally-Induced Matrix Degradation by Joiner, G.A., Bogoch, E.R., Pritzker, K.P., Buschmann, M.D., Chevrier, A., Foster, F.S.

“…Matrix degradation and proteoglycan loss in articular cartilag eare features of early osteoarthritis. To determine the effect of matrix degradation and…”
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