Ultrasound system with iterative high pass filter selection
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United States of America Patent
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Issued Date -
May 11, 2006
app pub date -
Dec 19, 2005
filing date -
Aug 20, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed herein is the iterative selection of an optimal high pass filter for progressive, ordered filtering of clutter from ultrasound color flow imaging data wherein a criterion for selecting the optimal high pass filter is if a mean frequency of filtered signal data is less than a clutter frequency threshold wherein if the mean frequency is less than the clutter frequency threshold is determined by whether an absolute value of an imaginary part of a first order autocorrelation of the filtered signal data is less than a constant times a real part of the autocorrelation, where the constant is determined by the clutter frequency threshold, wherein a high pass filter input for each iterative selection is the original ultrasound color flow imaging data.
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