Ultrasonic diagnostic apparatus capable of acquiring high qualit

Details Ultrasonic diagnostic apparatus capable of acquiring high qualit Ultrasonic diagnostic apparatus capable of acquiring high qualit

1991-08-28

1994-09-20

Jaworski, Francis

Surgery

Truss

Pad

A61B 800

Patent

active

053480139

ABSTRACT:
In an ultrasonic diagnostic apparatus, ultrasonic propagation time differences contained in echo signals reflected from a biological body under medical examination are corrected by comprising: a quadrature phase detecting unit for quadrature-phase-detecting the echo signals derived from an ultrasonic transducer probe to obtain as phase data a quadrature signal component and an in-phase signal component; a delay-time correcting value calculating unit for calculating at least one of delay-time correcting values used for the energizing signals and the echo signals based upon both of the quadrature signal component and in-phase signal component; and, a delay controlling unit for controlling at least one of delay time data previously given to the energizing signals anti echo signals based upon one of calculated delay-time correcting values.

REFERENCES:
patent: 4817619 (1989-04-01), Sugiyama et al.
patent: 4989143 (1991-01-01), O'Donnell et al.
patent: 5184623 (1993-02-01), Mallart
English language summary of Japanese Patent No. 63-51846.

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