The ultrasonic nonlinearity parameter for biological media

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Authors

  • F. DUNN Bioacoustics Research Laboratory, University of Illinois, United States
  • W. K. LAW Bioacoustics Research Laboratory, University of Illinois, United States
  • L. A. FRIZZELL Bioacoustics Research Laboratory, University of Illinois, United States

Abstract

The nonlinearity parameter B/A of several soft tissues was measured using two independent methods. The B/A values of most soft tissues were found to be between 7 and 8, with the exception of fat which has a B/A value close to 11. It is proposed that structural hierarchy contributes to the BM values of tissues.

References

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[3] E. L. CARSTENSEN, W. K. LAW, N. D, McKAY, T. G. MUIR, Demonstration of nonlinear acoustical effects at biomedical frequencies and intensities, Ultrasound Med. Biol., 6, 350-368 (1980).