PMID: 3771930Oct 1, 1986Paper

Ultrasound fields in attenuating media

The Journal of the Acoustical Society of America
R Lerch, W Friedrich

Abstract

For medical ultrasonic imaging and for nondestructive testing, the attenuation of pressure waves and the resulting shift in wave velocity are important features in commonly used transmission media such as biological tissue. An algorithm for the numerical evaluation of pressure field distributions generated by ultrasonic transducers is presented. The attenuation and dispersion of the sound transmission medium are taken into consideration. The sound fields are computed numerically for continuous wave as well as pulse excitation. The transducer has plane or gently curved geometry and is embedded in a plane rigid baffle. The numerically determined pressure fields are presented as 3D plots, as gray-scale images for a fixed time stamp (like a snapshot), or as isobars regarding the maximum values over time for each local point in the area under investigation. The algorithm described here can be utilized as a tool for design of ultrasound transducers, especially array antennas.

Citations

Jan 18, 2007·The Journal of the Acoustical Society of America·Margaret G Wismer
Feb 5, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·D Grolemund, C S Tsai
Feb 2, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·P GoriM Pappalardo
Jan 1, 1989·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·M Nikoonahad, M V Iravani
Jan 1, 1991·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Z YouW Lord
Jul 1, 1993·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·A SartiC Lamberti

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