METHOD AND DEVICE FOR DETECTING VISCOELASTIC PARAMETER OF VISCOELASTIC MEDIUM

摘要

The present invention provides a method and device for detecting aviscoelasticparameter of a viscoelastic medium. The method comprises: applying amechanicalvibration at a single predetermined frequency to the viscoelastic medium togenerate ashear wave in the viscoelastic medium (101); emitting ultrasonic waves to theviscoelasticmedium, and receiving ultrasonic echo signals (102); acquiring maximumdisplacementdata of the shear wave at various depths according to the ultrasonic echosignals (103);fitting each of the maximum displacement data to obtain a maximum displacementattenuation curve (104); and determining the viscoelastic parameter of theviscoelasticmedium according to the maximum displacement attenuation curve (105). Themethod canincrease a measurement dimension of a tissue, facilitating the provision ofricher tissueparameter information and measurement dimensions, and providing a moreaccuratemeasurement result of tissue fibrosis.