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Article Dans Une Revue Applied Acoustics Année : 2009

Discussion of the application of finite Volterra series for the modeling of the oscillation behavior of ultrasound contrast agents

Résumé

Ultrasound contrast agents consist of microbubbles with diameters in the micrometer range. Excited by ultrasound, these bubbles exhibit highly nonlinear oscillation. This paper evaluates the usage of Volterra series for the modeling of the oscillation behavior of contrast agent microbubbles. Feasibility is determined by implementation and application of an identification algorithm to oscillation data obtained from numerical simulations of a free gas bubble with a resting radius r0 = 1 µm. For insonification pressures up to 100 kPa, a cubic model allowed for a mean-square error of less than-16 dB with respect to the reference signal. Analysis of the response to narrowband signals showed that the achievable mean-square error is further reduced for the bandwidth available to typical ultrasound transducers used for clinical diagnostics.
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Dates et versions

hal-03193309 , version 1 (15-04-2021)

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Michał Mleczko, Michiel Postema, Georg Schmitz. Discussion of the application of finite Volterra series for the modeling of the oscillation behavior of ultrasound contrast agents. Applied Acoustics, 2009, 70 (10), pp.1363-1369. ⟨10.1016/j.apacoust.2008.09.012⟩. ⟨hal-03193309⟩
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