Generation and assessment of shear waves in elasticity imaging
US9237878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Sep 16, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/483
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for generation and analysis of shear waves in a subject with an ultrasound system. Multiple short ultrasound push pulses are applied, as a set and optionally more than once, to one or more push origins at the subject to produce first and second shear waves of large amplitudes and desired spatial distributions, which are separated in space and time and which have opposite polarity such that initial movements of the subject tissue, respectively caused by the first and second shear waves, occur in opposite directions. At least one mechanical property of the subject (including that represented by shear wave group velocity, phase velocity, and attenuation of a shear wave) is determined based at least in part on a distance between wavefronts of the first and second shear waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.