Details

Title

A simulation for detecting nonlinear echoes from microbubbles packets

Journal title

Archives of Acoustics

Yearbook

2015

Numer

No 2

Publication authors

Keywords

This work presents a simulation of the response of packets of microbubbles in an ultrasonic pulse-echo scan line. Rayleigh-Plesset equation has been used to predict the echo from numerically obtainedradial dynamics of microbubbles. Varying the number of scattering microbubbles on the pulse wave formhas been discussed. To improve microbubble-specific imaging at high frequencies, the subharmonic andsecond harmonic signals from individual microbubbles as well as microbubbles packets were simulatedas a function of size and pressure. Two different modes of harmonic generation have been distinguished.The strength and bandwidth of the subharmonic component in the scattering spectrum of microbubblesis greater than that of the second harmonic. The pressure spectra provide quantitative and detailedinformation on the dynamic behaviour of ultrasound contrast agent microbubbles packet.

Divisions of PAS

Nauki Techniczne

Abstract

This work presents a simulation of the response of packets of microbubbles in an ultrasonic pulse- echo scan line. Rayleigh-Plesset equation has been used to predict the echo from numerically obtained radial dynamics of microbubbles. Varying the number of scattering microbubbles on the pulse wave form has been discussed. To improve microbubble-specific imaging at high frequencies, the subharmonic and second harmonic signals from individual microbubbles as well as microbubbles packets were simulated as a function of size and pressure. Two different modes of harmonic generation have been distinguished. The strength and bandwidth of the subharmonic component in the scattering spectrum of microbubbles is greater than that of the second harmonic. The pressure spectra provide quantitative and detailed information on the dynamic behaviour of ultrasound contrast agent microbubbles packet.

Publisher

Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society

Identifier

ISSN 0137-5075 ; eISSN 2300-262X

DOI

10.1515/aoa-2015-0017

×