Method and apparatus for mapping color flow velocity data into display intensities
US5895358A · kind A · utility
17Cited by
4References
15Claims
0Family size
Assignee
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Key dates
| Filing date | May 7, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | May 7, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/916
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for mitigating aliasing when imaging moving fluid or tissue using velocity Doppler shift data. To eliminate the effects of slight aliasing in the velocity mode, symmetrical (or non-directional) velocity/color maps are used to map positive and negative velocity data of the same magnitude to the same color and same display intensity. If the pulse repetition frequency is adjusted so that only subtle aliasing is present, an optimal frame averaging of the data can be achieved by removing the sign of the velocity data either before or during frame averaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.