Method for controlling adaptive color flow processing using fuzzy logic
US5357965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8981
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A color flow processor has a fuzzy logic processor for determining when an adaptive wall filter can be turned off in response to the condition wherein flow signal will be treated as wall signal. The fuzzy logic processor uses details of wall velocity and power, as well as variance, to determine whether the measured echo signal component to be filtered truly represents the wall velocity only. The general rule applied by the fuzzy logic processor would be that if the wall velocity is LOW and the wall variance is LOW and the wall power is HIGH, than the adaptive filter is turned ON, where LOW and HIGH are fuzzy values. Use can be made of information from previous states, either temporally or spatially, allowing the system to adapt itself to each study or over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.