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Autor(en): 
  • Hideyuki Hasegawa
  • Hiroshi Kanai
  • Ultrasonic Methods for Measurement of Small Motion and Deformation of Biological Tissues for Assessment of Viscoelasticity 
     

    (Buch)
    Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 3 Artikel!


    Übersicht

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    Lieferstatus:   i.d.R. innert 7-14 Tagen versandfertig
    Genre:  Naturwissensch., Medizin, Technik 
    ISBN:  9780791860311 
    EAN-Code: 
    9780791860311 
    Verlag:  American Society of Mechanical Engineers,U.S. 
    Einband:  Gebunden  
    Sprache:  English  
    Dimensionen:  H 160 mm / B 236 mm / D 11 mm 
    Gewicht:  240 gr 
    Seiten:  56 
    Illustration:  Illustrations 
    Bewertung: Titel bewerten / Meinung schreiben
    Inhalt:
    In this monograph, an accurate ultrasonic method for measurement of
    small motion and deformation of biological tissue is described. In the
    displacement estimation based on the phase change of echoes, the displacement
    estimates are biased when the center frequency of the RF echo
    changes. Such an apparent change in the center frequency could be caused
    by the interference of echoes from scatterers. To reduce the influence of
    the center frequency variation on the estimation of motion and deformation,
    an error correcting function, which does not require the assumption
    that the center frequency distributions in 2 different frames are the same,
    was introduced. As a result, the proposed method provides better strain
    estimates in comparison with conventional phase-sensitive correlation
    methods.
    This monograph also shows examples of applications of this method to
    measurement of small motion and deformation of biological tissues. This
    method can be applied to measurement of elasticity of dynamic tissues,
    such as the artery. Also, elastic properties of static tissues can be also measured
    by combining with actuation using the acoustic radiation force.

      



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