Ultrasound imaging with reduced noise
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United States of America Patent
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Aug 16, 2011
Grant Date -
Sep 8, 2005
app pub date -
Apr 4, 2005
filing date -
Aug 4, 2003
priority date (Note) -
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Abstract
Signal processing techniques reduce the impact of noise (including speckle noise and shot noise) on ultrasound images by reducing the intensity of pixels that are probably noise and increasing the intensity of pixels that are probably signal. The decision of whether a given pixel is probably noise or probably signal is made based on spectral characteristics of the samples in and around the given pixel, based on knowledge of the expected spectral characteristics of the signal and the expected spectral characteristics of the noise.
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