Energy weighted parameter spatial/temporal filter

Details Energy weighted parameter spatial/temporal filter Energy weighted parameter spatial/temporal filter

1995-04-26

1997-03-11

Jaworski, Francis

Surgery

Truss

Pad

7386125, A61B 806

Patent

active

056091559

ABSTRACT:
In an ultrasound imaging system, the mean velocity of a fluid flow, variance of velocity of the fluid flow and energy value of Doppler ultrasound signals from the flow in response to transmitted ultrasound are first estimated from autocorrelation values of the signals to form a set of parameters for a corresponding sampling time or a corresponding sampling location. An averaging process is then performed on two sets of the estimated parameters corresponding to a plurality of different sampling times in temporal filtering or on two sets of the estimated parameters corresponding to a plurality of different locations in spatial filtering. The filtered parameters are then compared to thresholds in a discrimination process to reject noise and clutter.

REFERENCES:
patent: 4928698 (1990-05-01), Bonnefous
patent: 5014710 (1991-05-01), Maslak et al.
patent: 5099848 (1992-05-01), Parker et al.
patent: 5165413 (1992-11-01), Maslak et al.
patent: 5285788 (1994-02-01), Arenson et al.
patent: 5357965 (1994-10-01), Hall et al.
patent: 5363849 (1994-11-01), Suorsa et al.
patent: 5429137 (1995-07-01), Phelps et al.
patent: 5487389 (1996-01-01), Banjanin et al.
patent: 5494037 (1996-02-01), Banjanin et al.
"Real-time Two-dimensional Blood Flow Imaging Using an Autocorrelation Technique," by Chihiro Kasai et al., IEEE Transactions on Sonics and Ultrasonics, vol. SU-32, No. 3, pp. 458-464, May 1985.
"Real-time Colour Flow Mapping Systems," by D. H. Evans et al., Doppler Ultrasound - Physics, Instrumention, and Clinical Applications, John Wiley & Sons, New York, pp. 102-105, 1989.
"Time Domain Formulation of Pulse Doppler Ultrasound and Blood Velocity Estimation by Cross-Correction," by Bonnefous et al., Ultrasonic Imaging, 8, 73-85 (1986).
"Simulation of Real-time Frequency Estimations for Pulsed Doppler Systems," by van Leeuwen et al., Ultrasonic Imaging 8, 252-271, 1986.

Affiliated with

Also associated with

Rating

Energy weighted parameter spatial/temporal filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Energy weighted parameter spatial/temporal filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy weighted parameter spatial/temporal filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-436834