Ultrasonic doppler flow imaging method for eliminating motion artifacts
US5623929A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jun 30, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8979
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic diagnostic system is provided that removes the effects of image motion from the received Doppler information signals, allowing the display of a fluid flow image without image motion artifacts. The Doppler information signals received from an ultrasonic transducer include velocity components due to both the fluid flow through a subject as well as image motion. The Doppler information signals are demodulated to provide Doppler baseband signal samples containing a fluid motion component and an image motion component. An image motion vector is estimated from a comparison of consecutive image frames, and a relative Doppler frequency between the fluid motion component and the image motion component is derived utilizing the estimated image motion vector. A fluid motion vector can then be derived from the derived relative Doppler frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.