Ultrasonic doppler imaging apparatus

Details Ultrasonic doppler imaging apparatus Ultrasonic doppler imaging apparatus

1992-07-13

1993-12-14

Kamm, William E.

Surgery

Truss

Pad

7386125, A61B 806

Patent

active

052693082

ABSTRACT:
Disclosed is an ultrasonic Doppler imaging apparatus in which the velocity of a blood flow in a living body can be computed with high precision without increasing a scale of a signal processing circuit, so that a Doppler color image having satisfactory image quality is displayed. In the apparatus, an ultrasonic pulse signal is transmitted into the living body and is reflected from a target in the living body to be received by an ultrasonic probe, and the reception signal is subjected to quadrature phase detection to obtain an I signal and a Q signal. When an amplitude evaluating unit evaluates on the basis of the intensity of the I and Q signals that the reception signal contains many clutter components, a cut-off frequency of high-pass filters is increased by the application of a control signal (A) to thereby eliminate low-frequency clutter components. The outputs of the high-pass filters are converted into blood flow velocity information to be displayed as a Doppler color image.

REFERENCES:
patent: 4541437 (1985-09-01), Amemiya
patent: 4848354 (1989-07-01), Angelsen et al.

Affiliated with

Also associated with

Rating

Ultrasonic doppler imaging apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrasonic doppler imaging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic doppler imaging apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1697510