Ultrasonic imaging of the nonlinear parameter B/A: Simulation studies to evaluate phase and frequency modulation methods

Daehoon Kim, James F. Greenleaf, Chandra M. Sehgal

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

This paper presents a method for imaging the nonlinear parameter B/A. It is based on measuring phase shift and frequency shift of a high frequency acoustic probe wave by a low frequency acoustic pump wave. These measurements yield the real and the imaginary parts of the Fourier component of the distribution B/A at the wave number of the pump wave. We also derive the necessary set of wave numbers of the pump wave which must be employed to accurately image the B/A parameter. We show that these wave numbers are a function of sampling period and sampling number. Simulations of the imaging method show that the proposed method in this paper leads to more accurate imaging of B/A than the earlier method.

Original languageEnglish (US)
Pages (from-to)175-181
Number of pages7
JournalUltrasound in Medicine and Biology
Volume16
Issue number2
DOIs
StatePublished - 1990

Keywords

  • Fourier transform
  • Frequency modulation
  • Inverse Fourier transform
  • Nonlinear parameter B/A
  • Phase modulation
  • Probe wave
  • Pump wave

ASJC Scopus subject areas

  • Biophysics
  • Radiological and Ultrasound Technology
  • Acoustics and Ultrasonics

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