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Statistical model of clutter suppression in tissue harmonic imaging
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10.1121/1.3504712
/content/asa/journal/jasa/129/3/10.1121/1.3504712
http://aip.metastore.ingenta.com/content/asa/journal/jasa/129/3/10.1121/1.3504712
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Solid lines are normalized mean intensity 〈I 1,ω〉 in the focal region for G = 10 and different values of ν and σ. Dashed lines are , which is the result for no phase screen.

Image of FIG. 2.
FIG. 2.

Solid lines are normalized mean intensity 〈I 2〉 in the focal region for G = 10 and different values of ν and σ. Dashed lines are , which is the result for no phase screen.

Image of FIG. 3.
FIG. 3.

Numerical simulations of the field in the focal plane for G = 10, σ = 0.2, and v = 0 (no phase screen, first column), ν = 2 (second column), and ν = 5 (third column). First row shows the circle corresponding to source radius r = a and two realizations of the phase shading in the source plane, and subsequent rows show I 1 (second row), I 1,2ω (third row), and I 2 (fourth row).

Image of FIG. 4.
FIG. 4.

Comparison of statistical solutions (solid lines) with numerical averages obtained from Fig. 3 (dotted lines). Dashed lines are solutions for no phase screen. The error bars in (d) and (h) indicate the standard deviations of the individual realizations that were averaged to produce the dotted lines in (c) and (g), respectively.

Image of FIG. 5.
FIG. 5.

Solid lines are CSL evaluated for different values of G and ν. Dashed lines are limiting values for ν = ∞.

Image of FIG. 6.
FIG. 6.

Contributions to CSL(0) from the second harmonic generated before the phase screen as a function of phase screen location ζph for ν = 5 and several values of G.

Image of FIG. 7.
FIG. 7.

(a) Dependence of W 2 (solid line) on phase screen location for G = 5 and v = 5. Dashed lines separate out contributions to W 2 from the second harmonic generated before versus after the phase screen. (b) Corresponding dependence of CSL(0) (solid line) on phase screen location, with dashed lines for CSL< and CSL>. (c) Dependence of CSL on distance off axis.

Image of FIG. 8.
FIG. 8.

Comparison of statistical solutions 〈I 1,2ω〉 (left column) and 〈I 2〉 (right column) at different phase screen locations for G = 5 and ν = 5.

Image of FIG. 9.
FIG. 9.

Comparison of CSL B with CSL(0), with the latter given by Eq. (61), for G = 5 and ν = 5.

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/content/asa/journal/jasa/129/3/10.1121/1.3504712
2011-03-09
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Statistical model of clutter suppression in tissue harmonic imaging
http://aip.metastore.ingenta.com/content/asa/journal/jasa/129/3/10.1121/1.3504712
10.1121/1.3504712
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