Surgery – Truss – Pad
Patent
1995-06-30
1997-04-29
Jaworski, Francis
Surgery
Truss
Pad
A61B 806
Patent
active
056239297
ABSTRACT:
An ultrasonic diagnostic system is provided that removes the effects of image motion from the received Doppler information signals, allowing the display of a fluid flow image without image motion artifacts. The Doppler information signals received from an ultrasonic transducer include velocity components due to both the fluid flow through a subject as well as image motion. The Doppler information signals are demodulated to provide Doppler baseband signal samples containing a fluid motion component and an image motion component. An image motion vector is estimated from a comparison of consecutive image frames, and a relative Doppler frequency between the fluid motion component and the image motion component is derived utilizing the estimated image motion vector. A fluid motion vector can then be derived from the derived relative Doppler frequency.
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Jaworski Francis
Siemens Medical Systems Inc.
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