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Title: Parametric study of the peak negative acoustic pressure distribution within the image plane of a phased array transducer
Authors: D'hooge, Jan ×
Schrooten, Maarten
Bijnens, Bart
Thoen, Jan
Van de Werf, Frans
Sutherland, George
Suetens, Paul #
Issue Date: Jul-2001
Series Title: IEEE transactions on ultrasonics, ferroelectrics, and frequency control vol:48 issue:4 pages:1092-1102
Abstract: A study is presented in which the influence of pulse and transducer characteristics on the distribution of the peak negative acoustic pressure within the image plane of a phased array transducer is shown. First, the influence of the center frequency, the bandwidth of the transmitted pulse, the position of the focus point, and the properties of the phased array are investigated by computer simulation. These simulations show that both the maximal amplitude and the homogeneity of the distribution of the peak negative pressure within a sector image depend on these parameters. Most remarkably, they show that the maximal peak pressure does not necessarily occur on the geometrical symmetry axis of the array transducer but can occur at the outermost lateral lines of a sector image. Second, this effect is demonstrated experimentally by hydrophone measurements of the sound field produced by a standard, clinically used, 2.5-MHz phased array transducer. The experimental results agree well with the theoretical model. The relevance of this study for contrast echography and the safety measurements of ultrasound is discussed.
Description: D’hooge J., Schrooten M., Bijnens B., Thoen J., Van de Werf F., Sutherland G., Suetens P., ''Parametric study of the peak negative acoustic pressure distribution within the image plane of a phased array transducer'', IEEE transactions on ultrasonics, ferroelectrics, and frequency control, vol. 48, no. 4, pp. 1092-1102, July 2001 (+ cover image).
ISSN: 0885-3010
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
Cardiovascular Imaging and Dynamics
ESAT - PSI, Processing Speech and Images
Research Group Experimental Neurology
Laboratory for Cognitive Neurology
Cardiology
× corresponding author
# (joint) last author

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