P3B-3 Comparison of an Angular Spectrum Method and a Green´s Function Method for Nonlinear Propagation of Pulsed Acoustic Fields from Medical Phased Array Transducers

Author

Huijssen, J. ; Verweij, M.D. ; de Jong, N.

Author_Institution

Delft Univ. of Technol., Delft

fYear

2007

fDate

28-31 Oct. 2007

Firstpage

1740

Lastpage

1743

Abstract

Predictions of nonlinear ultrasound beams of a medical phased array transducer, steered at 0, 22.5 and 45 degrees, and generated by a forward-wave and a full-wave numerical model are presented. The results from both models show a good agreement in the unsteered situation and in all fundamental field profiles, but they deviate significantly in the harmonic field profiles for the steered situations.

Keywords

Green´s function methods; acoustic field; acoustic pulses; beam steering; biomedical transducers; biomedical ultrasonics; nonlinear acoustics; ultrasonic propagation; ultrasonic transducer arrays; Green´s function method; angular spectrum method; forward-wave model; full-wave numerical model; harmonic field profiles; medical diagnostic phased array transducers; nonlinear propagation; pulsed acoustic fields; ultrasonic beam steering; Acoustic arrays; Acoustic propagation; Acoustic pulses; Acoustic transducers; Biomedical acoustics; Biomedical transducers; Green´s function methods; Nonlinear acoustics; Phased arrays; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2007. IEEE

Conference_Location

New York, NY

ISSN

1051-0117

Print_ISBN

978-1-4244-1384-3

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2007.438

Filename

4410011