Ar. Skovoroda et al., THEORETICAL-ANALYSIS AND VERIFICATION OF ULTRASOUND DISPLACEMENT AND STRAIN IMAGING, IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 41(3), 1994, pp. 302-313
Evaluation of internal displacement and strain distributions in tissue
under externally applied forces is a necessary step in elasticity ima
ging. To obtain a quantitative image of the elastic modulus, strain an
d displacement fields must be measured with reasonable accuracy and in
verted based on an accurate theoretical model of soft tissue mechanics
. In this paper, results of measured internal strain and displacement
fields from gel-based phantoms are compared with theoretical predictio
ns of a linear elastic model. In addition, some aspects of elasticity
reconstruction based on measured displacement and strain fields are di
scussed.