Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1998-12-30
2000-11-07
Lateef, Marvin M.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
600443, 600441, 382128, A61B 800
Patent
active
061429430
ABSTRACT:
A Doppler unit generates a Doppler signal from ultrasound backscattered signals. A logic unit performs a Fourier transform and compresses the resulting signals according to a compression curve determined in part by the noise level in the system. The peak values of the compressed signals also may be used to adjust the video gray mapping of the compressed signals in order to improve the appearance of a Doppler image on a display.
REFERENCES:
patent: 5594807 (1997-01-01), Liu
patent: 5735797 (1998-04-01), Muzilla et al.
patent: 5993392 (1999-11-01), Roundhill et al.
Barnhart Susan M. B.
Mo Larry Y. L.
Pan Lihong
Washburn Michael J.
Cabou Christian G.
General Electric Company
Lateef Marvin M.
Patel Maulin
Price Phyllis Y.
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