Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1998-09-15
2000-03-14
Lateef, Marvin M.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
600447, A61B 812
Patent
active
060366508
ABSTRACT:
Ultrasonic imaging method and apparatus in which a reference waveform which is substantially free of echoes is modified to be equal to a weighted sum of the reference waveform and filtered signals from the transducing elements which transmit the ultrasonic waves and receive the reflected echoes. The modified waveform is then subtracted from the transducer signals to remove ringdown signals and provide a displayed image which is substantially free of ringdown artifacts.
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Bleam David
Litzza Gerald L.
Wu Ching-Chen
Ziegenbein Randall C.
Endosonics Corporation
Imam Ali M.
Lateef Marvin M.
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