Ultrasonic blood flow imaging apparatus

Details Ultrasonic blood flow imaging apparatus Ultrasonic blood flow imaging apparatus

1991-03-29

1993-03-02

Kamm, William E.

Surgery

Truss

Pad

12866005, 12866108, A61B 812

Patent

active

051900440

ABSTRACT:
An ultrasonic blood flow imaging apparatus of this invention includes an ultrasonic probe, a transmission system, a reception system, a B mode processing system, a CFM processing system, an FFT processing system, a video system, and a control system. The CFM processing system includes a new discriminating means. The discriminating means receives power, average blood flow velocity, and variance data output from an auto-correlation circuit. The discriminating means can discriminate Doppler shift signals (blood flow signals), noise signals, and clutter signals from each other with high precision on the basis of a relationship in combination of two or more received factors, i.e., the power, average blood flow velocity, and variance data. With such discrimination processing, only necessary blood flow signals can be extracted, and hence high-precision blood flow information can be obtained.

REFERENCES:
patent: 4966151 (1990-10-01), Takeuchi
patent: 4991589 (1991-02-01), Hongo et al.
patent: 4993417 (1991-02-01), Seo
patent: 5058593 (1991-10-01), Forestieri et al.
patent: 5078146 (1992-01-01), Sato

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