Ultrasonic reflection mode imaging of the acoustic nonlinearity parameter
Houshmand, Hooman
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https://hdl.handle.net/2142/23087
Description
Title
Ultrasonic reflection mode imaging of the acoustic nonlinearity parameter
Author(s)
Houshmand, Hooman
Issue Date
1992
Doctoral Committee Chair(s)
Cain, Charles A.
Department of Study
Electrical Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Biophysics, Medical
Biophysics, General
Language
eng
Abstract
The problem of mathematically modeling the nonlinear interaction of ultrasound beams is addressed. The counterpropagation model is studied and a new model, called the copropagation reflection model, is proposed. The new model shows that the copropagation of the probe and the reflected pump leads to nonlinear interaction. Simulation of the nonlinear interaction of the pump and the probe shows that the sensitivity of the copropagation reflection is higher than the counterpropagation nonlinear interaction. The theoretical curves representing the different models are compared with experimental data obtained under different experimental conditions, and the experimental study of the nonlinear interaction shows that the copropagation reflection model is confirmed by experimental data. This model offers the possibility of achieving greater accuracy in nonlinear imaging.
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