Apparatus for measuring blood flow speed using an ultrasonic bea

Details Apparatus for measuring blood flow speed using an ultrasonic bea Apparatus for measuring blood flow speed using an ultrasonic bea

1985-12-23

1988-05-17

Lastova, Maryann

Surgery

Truss

Pad

7386125, 364510, G01N 2902

Patent

active

047443677

ABSTRACT:
An ultrasonic diagnosis apparatus comprises a probe for transmitting an ultrasonic beam toward a body having a blood vessel therein and a plurality of receiver circuits corresponding to sampling points of the body in a direction approximately perpendicular to the beam to produce respective intensities of reflected waves from the sampling points. A distribution of the reflected-wave intensities from the receiver circuits is measured at a predetermined interval of time. A shift between two successive intensity distributions thus measured is detected by a correlator, thereby determining a blood flow speed, in the blood vessel of the body, in the direction approximately perpendicular to the beam.

REFERENCES:
patent: 4471785 (1984-09-01), Wilson et al.
patent: 4484478 (1984-11-01), Harkonen
patent: 4494213 (1985-01-01), Thompson
patent: 4575830 (1986-03-01), Ingram et al.

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