Distortion of finite amplitude ultrasound in lossy media
- 1 March 1983
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 73 (3), 774-779
- https://doi.org/10.1121/1.389043
Abstract
A form of Burgers'' equation is used to derive an algorithm for calculating harmonic generation by a continuous plane wave of ultrasound propagating in a nonlinear, lossy, nondispersive medium. The algorithm accounts for attenuation that is not quadratically related to the frequency of the wave. Attenuation strongly affects the rate of harmonic production. The effect of variations of the relationship between attenuation and frequency is shown . Biological tissue is an example of a highly lossy medium where the attenuation does not increase with the square of the frequency. Calculations for several types of tissue and biological fluids are presented that show, for certain conditions, finite amplitude distortion is possible.Keywords
This publication has 4 references indexed in Scilit:
- Finite amplitude effects on the thresholds for lesion production in tissues by unfocused ultrasoundThe Journal of the Acoustical Society of America, 1981
- Demonstration of nonlinear acoustical effects at biomedical frequencies and intensitiesJapanese Journal of Clinical Oncology, 1980
- Prediction of nonlinear acoustic effects at biomedical frequencies and intensitiesJapanese Journal of Clinical Oncology, 1980
- Comprehensive compilation of empirical ultrasonic properties of mammalian tissuesThe Journal of the Acoustical Society of America, 1978