Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Acoust Soc Am. 2007 Nov;122(5):2522-5. doi: 10.1121/1.2785045.

Estimation of tissue's elasticity with surface wave speed.

Author information

  • 1Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905, USA. zhang.xiaoming@mayo.edu

Abstract

The mechanical response of tissues to external forces has gained considerable interest in medical diagnosis. One approach to imaging tissue elastic properties is to apply an external force on the surface of the body. Another approach is to generate a localized force inside the tissue with the radiation force of ultrasound. In this paper, a new method is developed to estimate tissue's elasticity based on surface wave speed measurement. The theory of surface wave speed is developed for estimating tissue's elasticity. Experiments are carried out on a tissue-mimicking ultrasound phantom. An amplitude modulated ultrasound signal of a few hundred hertz is used to generate a localized force in the phantom. The surface wave fields are measured with a laser vibrometer. It shows that the surface wave speed can be used for inversely estimating tissue's elastic properties based on tissue's surface measurement.

PMID:
18189542
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Institute of Physics
    Loading ...
    Write to the Help Desk