Real time color doppler ultrasound imaging
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Feb 18, 1998
filing date -
Feb 20, 1997
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Abstract
A method for generating color Doppler images is implemented in real time using digital processing steps implemented on multi-purpose microprocessors. Processing is reduced by estimating velocity only when a tissue threshold decision for a given sample indicates that the sample is not tissue. Arc tangent calculations in the velocity estimation are performed using simplified look-up tables without sacrificing accuracy. One look-up table is lineraly quantized. A second is nonlinearly quantized.
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