Amplitude-modulated acoustic radiation force experienced by elastic and viscoelastic spherical shells in progressive waves

Mitri, F.G.; Fellah, Zine El Abiddine

doi:10.1016/j.ultras.2006.03.001

Cited by 11 publications

(2 citation statements)

References 46 publications

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“…However, dynamic radiation force has been used in measuring absorption in liquids [10], measuring the power of ultrasound transducers [24], and inducing oscillation in liquid drops [25]. Theoretical studies of the dynamic radiation force have been undertaken for spheres, and spherical and cylindrical shells [13, 18, 26, 27]. …”

Section: Introductionmentioning

confidence: 99%

A Review of Vibro-acoustography and its Applications in Medicine

Urban

Alizad²,

Aquino

et al. 2011

CMIR

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In recent years, several new techniques based on the radiation force of ultrasound have been developed. Vibro-acoustography is a speckle-free ultrasound based imaging modality that can visualize normal and abnormal soft tissue through mapping the acoustic response of the object to a harmonic radiation force induced by ultrasound. In vibro-acoustography, the ultrasound energy is converted from high ultrasound frequencies to a low acoustic frequency (acoustic emission) that is often two orders of magnitude smaller than the ultrasound frequency. The acoustic emission is normally detected by a hydrophone. In medical imaging, vibroacoustography has been tested on breast, prostate, arteries, liver, and thyroid. These studies have shown that vibro-acoustic data can be used for quantitative evaluation of elastic properties. This paper presents an overview of vibro-acoustography and its applications in the areas of biomedicine.

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Section: Introductionmentioning

confidence: 99%

A Review of Vibro-acoustography and its Applications in Medicine

Urban

Alizad²,

Aquino

et al. 2011

CMIR

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“…The WST method was originally developed for object detection by the underwater acoustics industry and has been intensively used to predict acoustic scattering from both spherical and cylindrical scatterers immersed in various surrounding fluids over the past two decades ͑Ayres et al, 1987;Gaunaurd and Werby, 1991;Hasheminejad and Safari, 2005;Mitri and Fellah, 2006͒. While the RPL equation is derived from a fluid velocity potential, through simplification it is reduced to a simple dynamic mass-spring system for the radial oscillation of the bubble without any shape oscillations. In contrast, the wavebased interaction between ultrasound and bubble in the WST method is retained in its description of multi-modal velocity potentials of the acoustic waves propagating through the surrounding fluid, the shell layer, and the internal gas.…”

Section: Introductionmentioning

confidence: 99%

Wave scattering from encapsulated microbubbles subject to high-frequency ultrasound: Contribution of higher-order scattering modes

Chen

Hunter

Shandas

2009

The Journal of the Acoustical Society of America

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The theoretical understanding of encapsulated microbubble response to high-frequency ultrasound ͑HFUS͒ excitation is still limited although some novel experimental HFUS contrast imaging techniques have been well developed. In this paper, the higher-order modal ͑HOM͒ contributions to the scattered field are studied for such microbubbles driven by 1-100 MHz ultrasound. An exact solution of all small-amplitude vibrational modes of a single encapsulated microbubble in water is given by the wave scattering theory ͑WST͒ method and compared to results obtained from Church's Rayleigh-Plesset-like model for the small-amplitude radial oscillation of a microbubble in an incompressible fluid. From numerical results, we show that the HOM field contribution is significant for scattering properties from individual Nycomed microbubbles with normalized frequency Ն0.2. It is also shown that the multiple scattering is strengthened for monodispersed Definity ® microbubbles of 3 m radius at frequencies Ͼ40 MHz. However, comparisons between the authors' analyses and known experimental data for polydispersed Definity ® microbubbles indicate that the HOM contributions are insignificant in attenuation estimation at frequencies Ͻ50 MHz. In conclusion, the WST model analysis suggests that HOM scattering is an important consideration for single bubbles but may be less critical in the modeling of polydispersed Definity ® bubbles at high frequencies.

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Radiation Force

2022

Pressure Oscillation in Biomedical Diagnostics and Therapy

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Amplitude-modulated acoustic radiation force experienced by elastic and viscoelastic spherical shells in progressive waves

Cited by 11 publications

References 46 publications

A Review of Vibro-acoustography and its Applications in Medicine

A Review of Vibro-acoustography and its Applications in Medicine

Wave scattering from encapsulated microbubbles subject to high-frequency ultrasound: Contribution of higher-order scattering modes

Radiation Force

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