Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 2007. IEEE
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-1384-3
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2007.438
