Ultrasonic doppler diagnostic system

Details Ultrasonic doppler diagnostic system Ultrasonic doppler diagnostic system

1992-06-26

1995-01-24

Jaworski, Francis

Surgery

Truss

Pad

A61B 806

Patent

active

053834640

ABSTRACT:
Disclosed is an ultrasonic doppler diagnostic system for obtaining blood flow information in the human body under examination utilizing ultrasonic Doppler effect, comprising: a clutter information detecting means for obtaining a moving velocity and/or its variance of clutter components on the basis of a received signal; a clutter information removing means for obtaining a clutter removing signal by removing clutter component information carried in the received signal from the received signal on the basis of the obtained moving velocity and/or variance; and a blood flow detecting means for obtaining blood flow information on the basis of the clutter removing signal. With this arrangement, it is possible to selectively remove only the clutter component information, provided that even if the blood flow is very slow, the Doppler shift frequencies of the blood flow component and clutter components are different from each other.

REFERENCES:
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patent: 4961427 (1990-10-01), Namekawa, deceased et al.
patent: 5107841 (1992-04-01), Sturgill
patent: 5109858 (1992-05-01), Nishiyama et al.
patent: 5163434 (1992-11-01), Kumazawa
patent: 5170792 (1992-12-01), Sturgill et al.
patent: 5190044 (1993-03-01), Kawasaki et al.

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