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Wave scattering from encapsulated microbubbles subject to high-frequency ultrasound: Contribution of higher-order scattering modes
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10.1121/1.3203917
/content/asa/journal/jasa/126/4/10.1121/1.3203917
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/4/10.1121/1.3203917

Figures

Image of FIG. 1.
FIG. 1.

Schematic sketch of the model.

Image of FIG. 2.
FIG. 2.

Contribution of first three modes of WST model as a function of driving frequency. The Albunex® bubble is in radius.

Image of FIG. 3.
FIG. 3.

Reduced scattering cross sections of Albunex® bubbles with radius (a) and (b) .

Image of FIG. 4.
FIG. 4.

Attenuation coefficients in Definity® microbubble suspensions. The bubbles are identical in radii of (a) and (b) . The bubble concentrations are (a) and (b) .

Image of FIG. 5.
FIG. 5.

Attenuation coefficients from models and measurements;

Image of FIG. 6.
FIG. 6.

Primary acoustic radiation forces on the Albunex® bubble in water as a function of radius under a driving ultrasound pulse wave with peak negative pressure and central frequencies of (a) and (b) .

Image of FIG. 7.
FIG. 7.

Reduced scattering cross sections of single Albunex® bubble as a function of driving frequency. The polytropic exponents are (a) 1.0 (left), (b) 1.1 (center), and (c) 1.4 (right).

Image of FIG. 8.
FIG. 8.

Scattering cross sections of single Nycomed bubble as a function of normalized frequency.

Image of FIG. 9.
FIG. 9.

Contour plot of normalized frequency.

Tables

Generic image for table
TABLE I.

Parameter values for aqueous suspensions of Albunex®, Definity®, and Nycomed bubbles. Listed values are given by Church (1995) except those noted in the footnotes.

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/content/asa/journal/jasa/126/4/10.1121/1.3203917
2009-10-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Wave scattering from encapsulated microbubbles subject to high-frequency ultrasound: Contribution of higher-order scattering modes
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/4/10.1121/1.3203917
10.1121/1.3203917
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