Ultrasonic absorption and dispersion in biological media: A postulated model

Chandra M. Sehgal, James F. Greenleaf

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


An integrated approach for the absorption of ultrasound by liquids and tissues is proposed from the solution of a one-dimensional wave equation of propagation. The proposed model explains the square and linear power dependence of absorption on frequency for liquids and tissues, respectively. The study also provides a new index, specific heat ratio (y), in terms of which the physical and the chemical state and thus possibly the pathological state of a tissue can be defined quantitatively.

Original languageEnglish (US)
Pages (from-to)1711-1718
Number of pages8
JournalJournal of the Acoustical Society of America
Issue number6
StatePublished - Dec 1982


  • 43.35. Bf
  • 43.80. Cs
  • 87.60. Bi
  • PACS numbers

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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