Class 1, 2, and 3 Scattering

  • James F. Greenleaf
  • Chandra M. Sehgal

Abstract

Scattering processes have been most successful in imaging and characterization of biologic tissues. In the traditional sense scattering may be defined as the change of amplitude, frequency, phase velocity, or direction of propagation of a wave as a result of spatial or temporal nonuniformities of the medium. The inhomogeneities arise because of variations in compressibility or acoustic impedance differences. In this section, we almost exclusively treat scattering as a phenomenon of redirection of energy in space. A few techniques that are currently used to extract quantitative information about the nature of the tissues in the echo mode are discussed.

Keywords

Hepatitis Attenuation Coherence Cardiomyopathy Autocorrelation 

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Copyright information

© Mayo Foundation 1992

Authors and Affiliations

  • James F. Greenleaf
    • 1
  • Chandra M. Sehgal
    • 2
  1. 1.Department of Physiology and BiophysicsMayo Clinic FoundationRochesterUSA
  2. 2.Department of RadiologyUniversity of PennsylvaniaPhiladelphiaUSA

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