Search Results - "Newhouse, V.L."

Advantages of subharmonic over second harmonic backscatter for contrast-to-tissue echo enhancement by Shankar, P M, Dala Krishna, P, Newhouse, V L

“…It is shown experimentally that backscatter from two ultrasonic contrast agents suspended in water or saline contains subharmonics of the incident frequency…”
Get more information

Theory of ultrasound Doppler-spectra velocimetry for arbitrary beam and flow configurations by Censor, D., Newhouse, V.L., Vontz, T., Ortega, H.V.

“…In conventional ultrasound Doppler systems, the velocity component along the beam axis is derived from the observed frequency shift. Recently, it was verified…”
Get full text

Analysis and Comparison of Some Frequency Compounding Algorithms for the Reduction of Ultrasonic Clutter by Amir, I., Bilgutay, N.M., Newhouse, V.L.

Get full text

Simulated capillary blood flow measurement using a nonlinear ultrasonic contrast agent by Schrope, B, Newhouse, V L, Uhlendorf, V

“…This paper proposes a system for measuring slow, small volume blood flow, such as that found in the capillary beds. The method relies on the injection of a…”
Get more information

Convolution and Correlation Using Nonlinear Interactions of Lamb Waves by Furgason, E.S., Newhouse, V.L.

Get full text

Three-dimensional vector flow estimation using two transducers and spectral width by Newhouse, V.L., Dickerson, K.S., Cathignol, D., Chapelon, J.-Y.

“…Current ultrasonic blood flow measurement systems estimate only that component of flow which is parallel to the incident ultrasound beam. This is done by…”
Get full text

Transverse Doppler in-vivo spectrograms by Guidi, G., Tortoli, P., Chabria, Y., Righi, D., Pignoli, P., Newhouse, V.L.

“…Objective: It is known that a focused ultrasound beam transversely oriented to the direction of flow gives a Doppler spectrum, which despite being centred on…”
Get full text

Experimental proof of Doppler bandwidth invariance by Tortoli, P., Guidi, G., Mariotti, V., Newhouse, V.L.

“…A line flow of scatterers crossing the sound field produced by a focused circular transducer at uniform velocity originates a quasi-triangular Doppler…”
Get full text

Invariance of the Doppler bandwidth with range cell size above a critical beam-to-flow angle by Tortoli, P., Guidi, G., Newhouse, V.L.

“…For a sound beam impinging on a blood vessel, with a range cell much smaller than the vessel diameter, it is known that the breadth of the echo Doppler…”
Get full text

On the spectral properties of Doppler thread phantoms by Cathignol, D, Dickerson, K, Newhouse, V L, Faure, P, Chapelon, J Y

“…It is shown that some of the threads used in Doppler phantoms have a repetitive structure which leads to peaks in the angular distribution of the backscattered…”
Get more information

High-speed bubble sizing using the double frequency technique for oceanographic applications by Koller, D., Li, Y., Shankar, P.M., Newhouse, V.L.

“…A high-speed bubble sizing technique that should have the capability of accurately determining bubble populations in breaking waves has been developed. The…”
Get full text

Theory of Ultrasound Doppler-Spectra Velocimetry for Arbitrary Beam and Flow Configurations by Censor, D., Newhouse, V.L.

Get full text

Doppler ultrasound technique for measuring capillary-speed flow velocities with strong stationary echoes by Ting, T H, Newhouse, V L, Li, Y

“…Ultrasound Doppler is widely used for low measurement in both medicine and industry, having the advantages of being non-invasive and comparatively simple and…”
Get more information

Split-spectrum processing: analysis of polarity threshold algorithm for improvement of signal-to-noise ratio and detectability in ultrasonic signals by Shankar, P.M., Karpur, P., Newhouse, V.L., Rose, J.L.

“…A polarity thresholding algorithm that has recently been developed for split-spectrum processing for ultrasonic coherent noise reduction is theoretically…”
Get full text

Nonlinear Acoustic Signal Processing in Multi-Mode Structures by Furgason, E.S., Newhouse, V.L.

Get full text

Anlysis of Random Signal Blood Flow Measurement by Newhouse, V.L., Bendick, P.J.

Get full text

Bubble sizing with high spatial resolution by Cathignol, D., Chapelon, J.Y., Newhouse, V.L., Shankar, P.M.

“…The authors propose a technique that allows them to size bubbles with the same accuracy as with the double-frequency method and to locate them with the same…”
Get full text

On Coherent Scattering from Random Ensembles and its Information Content by GuoYao Yu, Newhouse, V.L., Censor, D.

Get full text

Estimation of scatterer volume density near a concentration gradient by Newhouse, V L, Amir, I

“…A general formulation of the echo received from a random scatterer ensemble illuminated by a short electromagnetic or sonic signal is developed. It is shown…”
Get more information

Counteracting Multipath Effects in Gap Measurement of Nuclear Steam Generator Tubes by Amir, I., Newhouse, V.L., Furgason, E.S.

Get full text