Corrections for wavefront aberrations in ultrasound imaging
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United States of America Patent
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Sep 25, 2007
Grant Date -
Feb 10, 2005
app pub date -
Jul 19, 2004
filing date -
Jul 17, 2003
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Abstract
An estimation method for correction filters for wavefront aberration correction in ultrasound imaging is given. The aberration is introduced due to spatial variations of the ultrasound propagation velocity in heterogeneous tissue. The correction filters are found as eigenvectors of the cross-correlation matrix of the element signals. In particular, the eigenvectors with a small spatial linear/plane phase component is sought. Detailed methods for calculating the eigenvectors are given.
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