Ultrasonic diagnostic apparatus

Details Ultrasonic diagnostic apparatus Ultrasonic diagnostic apparatus

1990-06-27

1992-07-07

Jaworski, Francis

Surgery

Truss

Pad

7386125, A61B 806

Patent

active

051274183

ABSTRACT:
Pulses of an ultrasonic wave beam are emitted into a body at a predetermined repetition period. Echo pulses of the ultrasonic wave beam are received via a pulrality of different channels. Each of the received pulses is converted into corresponding electric signals of the respective channels. A pair of adders invert signs of alternate ones of pairs of the electric signals of adjacent channels, summing the inverted sign electric signals with remaining non-inverted sign electric signals, converting the electric signals into a pair of complex signals having phases which are spatially different from each other by 90 degrees. An autocorrelation function of the complex signals is calculated. A component of a speed of moving matter within the body in a predetermined direction is calculated on the basis of the autocorrelation function. The moving matter causes the echo pulses. The predetermined direction is perpendicular to a direction of travel of the ultrasonic wave beam pulses.

REFERENCES:
patent: 4265126 (1981-05-01), Papadofrangakis et al.
patent: 4742830 (1988-05-01), Tamano et al.
patent: 4979513 (1990-12-01), Sakai et al.
Japanese Journal of Applied Physics/Supplement, vol. 26, supplement 26-1, 1987, pp. 9-13, Tokyo, JP; C. Kasai et al "Real-Time Two-Dimensional Blood Flow Imaging Using Ultrasound Dopper".

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1823946