Title :
Attenuation of ultrasound pressure fields described via contrast source formulation
Author :
Demi, L. ; Verweij, M.D. ; Huijssen, J. ; de Jong, N. ; van Dongen, K.W.A.
Author_Institution :
Lab. of Acoust. Imaging & Sound Control, Delft Univ. of Technol., Delft, Netherlands
Abstract :
Experimental data reveal that attenuation is an important phenomenon in medical ultrasound. The phenomenon is of particular importance for applications based on nonlinear propagation, as the higher frequency components of the pressure field generally experience greater attenuation. Therefore a method that is capable of modeling attenuation accurately is essential. In this paper we present a method to model attenuation via a contrast source formulation. We compare the obtained results with a version of the INCS method in which the attenuation is included in the Green´s function. Both results are in excellent agreement with each other.
Keywords :
Green´s function methods; bioacoustics; biomedical ultrasonics; nonlinear acoustics; ultrasonic absorption; ultrasonic propagation; Green´s function; INCS method; contrast source formulation; medical ultrasound; nonlinear ultrasonic propagation; ultrasound pressure field attenuation; Acoustic propagation; Acoustic waves; Attenuation; Biomedical acoustics; Biomedical imaging; Laboratories; Laplace equations; Nonlinear acoustics; Nonlinear equations; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium (IUS), 2009 IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4389-5
Electronic_ISBN :
1948-5719
DOI :
10.1109/ULTSYM.2009.5441906
