Title :
P3G-1 3D Time-Domain Modeling of Nonlinear Medical Ultrasound with an Iterative Green´s Function Method
Author :
Huijssen, J. ; Verweij, M.D. ; de Jong, N.
Author_Institution :
Delft Univ. of Technol.
Abstract :
A full-wave 3D time domain algorithm is presented that calculates the nonlinear acoustic wavefield of medical phased array transducers emitting an arbitrarily steered, focused and apodized beam. The algorithm can be used for computer simulation studies of the occurring second and higher harmonic wavefields in these configurations and for the optimization of the transducer design. It is based on the iterative employment of a Green´s function (or impulse response) method with the nonlinearity included as a contrast source. Several comparisons with validated algorithms are made, showing a perfect agreement
Keywords :
Green´s function methods; acoustic field; biological techniques; biomedical transducers; biomedical ultrasonics; iterative methods; nonlinear acoustics; ultrasonic transducer arrays; 3D time-domain modeling; higher harmonic wavefields; impulse response method; iterative Green function method; medical phased array transducers; nonlinear acoustic wavefield; nonlinear medical ultrasound; second harmonic wavefields; Acoustic arrays; Acoustic transducers; Biomedical transducers; Green´s function methods; Iterative algorithms; Iterative methods; Nonlinear acoustics; Phased arrays; Time domain analysis; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.535
