Method for controlling adaptive color flow processing using fuzz

Details Method for controlling adaptive color flow processing using fuzz Method for controlling adaptive color flow processing using fuzz

1993-11-24

1994-10-25

Manuel, George

Surgery

Truss

Pad

36441325, A61B 800

Patent

active

053579658

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.

REFERENCES:
patent: 5269289 (1993-12-01), Takehana et al.
patent: 5307807 (1994-05-01), Sosa et al.
patent: 5309921 (1994-05-01), Kisner et al.
Kasai, Chihiro et al., "Real-Time Two-Dimensional Blood Flow Imaging Using an Autocorrelation Technique", IEEE Transactions On Sonics and Ultrasonics, vol. SU-32, No. 3., May 1985, pp. 458-464.

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