Archives of Acoustics, 33, 4(S), pp. 13–19, 2008

Analysis and Modelling of Ultrasonic Pulses in a Biological Medium

Krzysztof J. OPIELIŃSKI
Institute of Telecommunications, Teleinformatics and Acoustics

In this work, formulas were presented, which allow modelling of linear and nonlinear
propagation of ultrasonic wave in a biological medium, by simulating the shape of pulses
which propagate in this medium. Analysed and measured in chosen biological media using
transmission method, the linear and nonlinear ultrasonic pulses were modelled by means of
developed formulas. Very good compatibility of the representation was achieved both in the
area of time and frequency. In case of biological media causing high attenuation of ultrasonic
wave, reduction of mid frequency in the receiving pulse caused by attenuation dispersion was
observed.
Keywords: ultrasonic wave propagation, biological medium, pulse modelling
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