Selected methods for imaging elastic properties of biological tissues

Research output: Contribution to journalReview articlepeer-review

514 Scopus citations

Abstract

For millennia, physicians have used palpation as a part of the physical examination to detect pathology. The ubiquitous presence of "stiffer" tissue associated with pathology often represents an early warning sign for disease, as in the cases of breast or prostate cancer. Very often tumors are found at surgery that were occult even with modern imaging instruments. This implies that methods for estimating "hardness" of tissues would add a weapon to the medical armamentarium. To this end, this review discusses several methods of estimating tissue hardness using internal or external means of applying stress (force per unit area) and several associated methods of detecting the resulting strain (fractional length change) in an effort to image a tissue mechanical property, such as Young's modulus (ratio of stress to strain). Some investigators have developed methods of estimating stiffness or modulus, but most methods result in qualitative images of stiffness. Nevertheless, such estimates may add a great deal of information not currently available to the current field of medical imaging.

Original languageEnglish (US)
Pages (from-to)57-78
Number of pages22
JournalAnnual Review of Biomedical Engineering
Volume5
DOIs
StatePublished - Dec 1 2003

Keywords

  • Elasticity
  • Elastography
  • Magnetic resonance
  • Palpation
  • Soft tissue
  • Ultrasound
  • Vibroacoustography

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Biomedical Engineering

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