Behavior of propagation and heating due to absorption of ultrasound in medium

Chiaki Yamaya, Hiroshi Inoue

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Recently, ultrasound waves have been put to practical use not only in diagnostic equipment but also in thermotherapy that uses the effect of ultrasound waves in a living body. The analysis of temperature rise due to the absorption of ultrasound in a soft tissue medium is an important analyzing object for the clarification of the effect of ultrasound waves in biological tissues and the estimation of medium constants. Three-dimensional simulations by the finite-difference time-domain (FDTD) method which used the equations that considers the absorption attenuation based on acoustic basic equations (ABEs) and the Westervelt equation have been performed. The consistency between the ABEs and the Westervelt equation is confirmed. The results of temperature measurement that uses glycerin as the absorbing medium of ultrasound are compared with those of FDTD simulation. The temperature distribution obtained by FDTD simulation almost corresponds to that obtained by experiment.

Original languageEnglish
Pages (from-to)4429-4434
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number5 B
DOIs
Publication statusPublished - 2006 May 25
Externally publishedYes

Keywords

  • 3D simulation
  • Absorption of ultrasound
  • Finite-difference time-domain method
  • Heat analysis

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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