Surgery – Truss – Pad
Patent
1991-01-18
1992-02-18
Jaworski, Francis
Surgery
Truss
Pad
A61B 802
Patent
active
050884980
ABSTRACT:
Quadrature phase signals (I and Q) from a pulsed Doppler medical instrument are analyzed to detect phase changes of consecutive echoes from tissue at a depth of interest. Such phase changes are analyzed to determine tissue displacement. Relative displacements at different depths are examined to detect tissue expansion and contraction. The area of the uterus of a pregnant female can be scanned and the frequency of tissue displacement or expansion and contraction examined to determine pulsations due to blood supplied by the fetal heart and/or pulsations due to blood supplied by the maternal heart. Conventional M-mode or B-mode images can be colorized differently for different frequencies of tissue displacement.
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Beach Kirk W.
Kansky John
Phillips David J.
Beach Robert W.
Brown Ward
Jaworski Francis
The Board of Regents of the University of Washington
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