Mechanical impedance of the canine diaphragm - Part 1 Experimental system and measurements

B. Suki, B. Daróczy, Z. Hantos

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A technique which does not require the measurement of strain has been developed for the investigation of the incremental dynamic properties of soft tissue sheets. Radially prestressed and circularly clamped canine diaphragm samples were exposed to small-amplitude pseudorandom pressure variations. From the measurement of these pressure variations and the volume flow caused by the vibration of the membrane the incremental mechanical impedance spectrum was computed in the 0·25-5 Hz frequency range at three different levels of initial stress. The diaphragm tissue was found to be basically elastic. However, the small viscous component showed a sharp negative frequency dependence between 0·25 and 2 Hz. The quasistatic elastances of the samples were in good, agreement with the elastance values derived from the impedance data. The relationship between the elastance and the initial stress was close to linear. It was concluded that the method is applicable to the study of the incremental dynamic properties of planar soft tissue samples.

Original languageEnglish
Pages (from-to)361-366
Number of pages6
JournalMedical & Biological Engineering & Computing
Volume28
Issue number4
DOIs
Publication statusPublished - Jul 1990

Fingerprint

Diaphragms
Diaphragm
Electric Impedance
Canidae
Tissue
Pressure
Vibration
Membranes

Keywords

  • Excised diaphragm
  • Forced oscillation
  • Initial stress
  • Membrane elastance
  • Tissue impedance

ASJC Scopus subject areas

  • Health Information Management
  • Health Informatics
  • Biomedical Engineering
  • Computer Science Applications
  • Computational Theory and Mathematics

Cite this

Mechanical impedance of the canine diaphragm - Part 1 Experimental system and measurements. / Suki, B.; Daróczy, B.; Hantos, Z.

In: Medical & Biological Engineering & Computing, Vol. 28, No. 4, 07.1990, p. 361-366.

Research output: Contribution to journalArticle

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