Numerical consideration of the relationship between nonlinear response and shell parameter of microbubble with coated membrane shell

Shinichi Takeuchi, Kawan Soetanto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The nonlinear response of the microbubble ultrasound contrast agent with a coaled membrane shell is studied in this paper for development of a harmonic imaging system, which is used to detect the harmonic components included in the waves scattered from microbubbles. The effect of the shell parameters, dominating the mechanical characteristics of the coating membrane, on the nonlinear response is considered numerically in this study. It is shown that a greater shell elasticity parameter Sp causes an increase in the resonant frequency of a microbubble. However, a greater shell friction parameter Sf causes only a slight decrease in the resonant frequency. It is also shown that an increase in the shell elasticity and friction parameters Sp and Sf causes a decrease in the harmonic component excitation efficiency.

Original languageEnglish
Pages (from-to)3045-3049
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number5 B
Publication statusPublished - 1999
Externally publishedYes

Fingerprint

Elasticity
Natural frequencies
Friction
membranes
Membranes
harmonics
Imaging systems
resonant frequencies
causes
friction
elastic properties
Ultrasonics
Coatings
coatings
excitation

Keywords

  • Coated membrane
  • Microbubbles
  • Nonlinear response
  • Numerical calculation
  • Shell elasticity parameter
  • Shell friction parameter

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

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AU - Soetanto, Kawan

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AB - The nonlinear response of the microbubble ultrasound contrast agent with a coaled membrane shell is studied in this paper for development of a harmonic imaging system, which is used to detect the harmonic components included in the waves scattered from microbubbles. The effect of the shell parameters, dominating the mechanical characteristics of the coating membrane, on the nonlinear response is considered numerically in this study. It is shown that a greater shell elasticity parameter Sp causes an increase in the resonant frequency of a microbubble. However, a greater shell friction parameter Sf causes only a slight decrease in the resonant frequency. It is also shown that an increase in the shell elasticity and friction parameters Sp and Sf causes a decrease in the harmonic component excitation efficiency.

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KW - Numerical calculation

KW - Shell elasticity parameter

KW - Shell friction parameter

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