| 摘要 |
A system and method for imaging the localized viscoelastic properties of tissue is disclosed. An oscillatory radiation force is applied to tissue in order to induce a localized oscillatory motion of the tissue. The phase and amplitude of the induced localized oscillatory motion of the tissue is also detected while the oscillatory radiation force is being applied. The viscous properties of the tissue are determined by a calculation of a phase shift between the applied oscillatory radiation force and the induced localized oscillatory motion of the tissue. The oscillatory force force inducing local oscillatory motion may be a single amplitude modulated ultrasound beam.
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