Quantitative surface wave method for measuring local viscoelasticity of lungs

Xiaoming Zhang, B. Qiang, Matthew W Urban, R. Kinnick, R. Hubmayr, James F Greenleaf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Certain lung diseases, particularly idiopathic pulmonary fibrosis, are associated with altered lung mechanical properties. While adequate techniques exist to measure the lung functions, current methods only provide global measurements of lung stiffness. We have developed a novel surface wave method for noninvasively measuring the viscoelasticity of lungs. In this paper, three types of experiments were carried out on an ex vivo pig lung. The lung was pressurized through a connecting tube to its trachea. The first experiment measured the pressure-volume relation of the lung during the inspiration and expiration. The second experiment measured the surface wave speed of the lung at different pressures. The surface wave was generated by an electromechanical shaker, and the surface wave propagation on the lung surface was measured by a laser vibrometer. The third experiment measured the surface wave speed with an ultrasound linear array transducer.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE Ultrasonics Symposium
DOIs
StatePublished - 2009
Event2009 IEEE International Ultrasonics Symposium, IUS 2009 - Rome, Italy
Duration: Sep 20 2009Sep 23 2009

Other

Other2009 IEEE International Ultrasonics Symposium, IUS 2009
CountryItaly
CityRome
Period9/20/099/23/09

Fingerprint

viscoelasticity
lungs
surface waves
expiration
trachea
inspiration
fibrosis
vibration meters
swine
linear arrays
wave propagation
stiffness
transducers
mechanical properties
tubes

Keywords

  • Bulk modulus
  • Lung
  • Surface wave
  • Viscoelasticity

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Quantitative surface wave method for measuring local viscoelasticity of lungs. / Zhang, Xiaoming; Qiang, B.; Urban, Matthew W; Kinnick, R.; Hubmayr, R.; Greenleaf, James F.

Proceedings - IEEE Ultrasonics Symposium. 2009. 5441822.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, X, Qiang, B, Urban, MW, Kinnick, R, Hubmayr, R & Greenleaf, JF 2009, Quantitative surface wave method for measuring local viscoelasticity of lungs. in Proceedings - IEEE Ultrasonics Symposium., 5441822, 2009 IEEE International Ultrasonics Symposium, IUS 2009, Rome, Italy, 9/20/09. https://doi.org/10.1109/ULTSYM.2009.5441822
Zhang, Xiaoming ; Qiang, B. ; Urban, Matthew W ; Kinnick, R. ; Hubmayr, R. ; Greenleaf, James F. / Quantitative surface wave method for measuring local viscoelasticity of lungs. Proceedings - IEEE Ultrasonics Symposium. 2009.
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