Surgery – Truss – Pad
Patent
1990-05-04
1991-11-05
Jaworski, Francis
Surgery
Truss
Pad
7386125, A61B 806
Patent
active
050624300
ABSTRACT:
A device for the measurement of the speed of blood flows on the basis of a sequence of N successive echographic signals, comprising an M-point fixed-echo elimination device (200), followed by a unit (300) for measuring the speed by correlation/summation/interpolation of the N-M+1 independent signals supplied by the fixed-echo elimination device (220). In accordance with the invention, the measuring unit (300) comprises N.sub.F parallel processing channels (310j), each of which is formed by a filter (311j), a memory (312j) for storing the filtered N-M+1 signals, and a corrlation device (313j) which supplies N-M intercorrelation functions, and on the other hand an adder (320) which forms the mean value of the N.sub.F (N-M) intercorrelation functions obtained, an estimate of the relevant speed being supplied by an interpolation circuit (330) acts on the mean intercorrelation function.
REFERENCES:
patent: 4761752 (1988-08-01), Barnes
patent: 4803990 (1989-02-01), Bonnefous et al.
patent: 4809249 (1989-02-01), Barnes
patent: 4825422 (1989-04-01), Takeda
patent: 4853904 (1989-08-01), Pesque
patent: 4883060 (1989-11-01), Pesque et al.
patent: 4928698 (1990-05-01), Bonnefous
Jaworski Francis
Manuel George
Squire William
U.S. Philips Corporation
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