Method and device for detecting viscoelastic parameter of viscoelastic medium
US10420528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2018 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Jun 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/899
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a method and device for detecting a viscoelastic parameter of a viscoelastic medium. The method comprises: applying a mechanical vibration at a single predetermined frequency to the viscoelastic medium to generate a shear wave in the viscoelastic medium (101); emitting ultrasonic waves to the viscoelastic medium, and receiving ultrasonic echo signals (102); acquiring maximum displacement data of the shear wave at various depths according to the ultrasonic echo signals (103), each of the maximum displacement data representing a maximum oscillation amplitude of the shear wave when the shear wave propagates to different depths in the viscoelastic medium; fitting each of the maximum displacement data to obtain a maximum displacement attenuation curve (104); and determining the viscoelastic parameter of the viscoelastic medium according to the maximum displacement attenuation curve (105). The method and device can provide a more accurate measurement result of tissue fibrosis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.