Visualization of blood flow by ultrasound speckle interferometry

Zuikova, N. V.; Kondrat'eva, T. V.; Svet, V. D.

doi:10.1134/1.1403548

Cited by 4 publications

(3 citation statements)

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“…Later developing this idea, he proposed a method of beamforming of flexible towed array which shape could randomly vary, but measuring of the shape was not necessary. Another methods of acoustical imaging in heterogeneous and scattering medium, based on the methods of nonlinear phase speckle interferometry has been proposed and developed in [37][38][39][40][41][42][43], where it was shown that it is possible to uniquely recover the trajectory of a sound source moving in a ocean waveguide or in strongly scattering medium, and with an accuracy of the diffraction resolution of the array. In [41], this approach was applied for visualization of fluid flow through inhomogeneous layers, and in [42] the ability of acoustical imaging of extended objects, located at the inhomogeneous scattering medium was demonstrated.…”

Section: Methods Of Acoustical Speckle -Holographymentioning

confidence: 99%

“…Another methods of acoustical imaging in heterogeneous and scattering medium, based on the methods of nonlinear phase speckle interferometry has been proposed and developed in [37][38][39][40][41][42][43], where it was shown that it is possible to uniquely recover the trajectory of a sound source moving in a ocean waveguide or in strongly scattering medium, and with an accuracy of the diffraction resolution of the array. In [41], this approach was applied for visualization of fluid flow through inhomogeneous layers, and in [42] the ability of acoustical imaging of extended objects, located at the inhomogeneous scattering medium was demonstrated. We emphasize once again that in the methods of speckle interferometry or speckle holography the information about the object and its parameters is extracting from the fluctuation part of the received field.…”

Section: Methods Of Acoustical Speckle -Holographymentioning

confidence: 99%

“…Below some experimental results of underwater acoustical imaging are presented [42].In this work acoustical lens camera with 2D PZT was used on frequency 1 MHz;2D array had 95*95 elements. Perspex screen with random holes of different diameters was placed in front of lens.…”

Section: Near Field Underwater Imagingmentioning

confidence: 99%

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Acoustical Imaging in Heterogeneous Environments

Svet¹,

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2014

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Section: Methods Of Acoustical Speckle -Holographymentioning

confidence: 99%

Section: Methods Of Acoustical Speckle -Holographymentioning

confidence: 99%

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Acoustical Imaging in Heterogeneous Environments

Svet¹,

Filtering²

2014

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Imaging via Speckle Interferometry and Nonlinear Methods

Sadler¹,

Maev²

2013

Advances in Acoustic Microscopy and High Resolution Imaging

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High-frequency ultrasonic speckle velocimetry in sheared complex fluids

Manneville

Bécu

Colin

2004

Eur. Phys. J. Appl. Phys.

136

141

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High-frequency ultrasonic pulses at 36 MHz are used to measure velocity profiles in a complex fluid sheared in the Couette geometry. Our technique is based on time-domain cross-correlation of ultrasonic speckle signals backscattered by the moving medium. Post-processing of acoustic data allows us to record a velocity profile in 0.02--2 s with a spatial resolution of 40 $\mu$m over 1 mm. After a careful calibration using a Newtonian suspension, the technique is applied to a sheared lyotropic lamellar phase seeded with polystyrene spheres of diameter 3--10 $\mu$m. Time-averaged velocity profiles reveal the existence of inhomogeneous flows, with both wall slip and shear bands, in the vicinity of a shear-induced ``layering'' transition. Slow transient regimes and/or temporal fluctuations can also be resolved and exhibit complex spatio-temporal flow behaviors with sometimes more than two shear bands.Comment: 15 pages, 18 figures, submitted to Eur. Phys. J. A

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Visualization of blood flow by ultrasound speckle interferometry

Cited by 4 publications

References 1 publication

Acoustical Imaging in Heterogeneous Environments

Acoustical Imaging in Heterogeneous Environments

Imaging via Speckle Interferometry and Nonlinear Methods

High-frequency ultrasonic speckle velocimetry in sheared complex fluids

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