Method and apparatus for high strain rate rejection filtering
US6776759B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Jun 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8977
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is provided for generating and displaying filtered strain rate signals corresponding to tissue structure within a subject in response to complex Doppler signals generated by an ultrasound system. Various combinations of several processing techniques are employed including filtering out high strain rate signals due to reverberation and other sources of noise, complex autocorrelation, velocity signal estimation, real strain rate signal estimation, complex strain correlation signal estimation, complex signal averaging, and real signal averaging. Color strain rate imaging is provided using the techniques such that the color images have reduced noise and improved image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.