Time delay calculation of stress waves using wavelet analysis - application in canine edematous lungs

Mehran Jahed, Bizhan Najafi, Ali Khamene, Stephen J. Lai-Fook

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

We examined the relationship between stress wave velocities and the lung density. The discrete cubic spline wavelet was used to calculate time delay and frequency character of the wave that is propagated on the surface of 3 canine lungs. The analysis verified previous results ascertaining the linear elastic model. As vascular volume, extra vascular lung water and lung density increased, wave velocities were decreased; that is wave velocities were inversely proportional to the square root of the lung density. The analysis verified the exact time-frequency relationship for the dominant stress wave velocity (i.e. shear or Rayleigh-Type Surface wave velocity) and showed other transit times besides the previously observed short and long ones are not valid.

Original languageEnglish (US)
Pages (from-to)2141-2144
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume3
StatePublished - Jan 1 1997
EventProceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP. Part 1 (of 5) - Munich, Ger
Duration: Apr 21 1997Apr 24 1997

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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