Poroelastography: estimating and imaging the poroelastic properties of tissues

Elisa E. Konofagou, Tim Harrigan, Jonathan Ophir, Tom Krouskop

Research output: Contribution to journalConference article

Abstract

In the field of elastography, biological tissues are typically assumed to be purely linear elastic solids. However, several tissues including brain, cartilage and edematous soft tissues, have long been known to be poroelastic. We recently developed a method to estimate the local Poisson's ratio in linear elastic solids. In the current study we use the same method to measure the time-dependent effective Poisson's ratio in poroelastic materials. The resulting time-sequenced poroelastograms show the spatial distribution of the fluid within the solid at each time instant and give insight into the Poisson's ratio of the solid and its permeability to the fluid. Results were obtained from both finite-element simulations and experimental poroelastic phantoms.

Original languageEnglish (US)
Pages (from-to)1627-1630
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume2
StatePublished - Dec 1 1999
Event1999 IEEE Ultrasonics Symposium - Caesars Tahoe, NV, USA
Duration: Oct 17 1999Oct 20 1999

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ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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