Methods and apparatus for blood speckle detection in an intravascular ultrasound imaging system
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United States of America Patent
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Jul 3, 2001
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app pub date -
Apr 11, 2000
filing date -
Sep 23, 1997
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Abstract
Methods and apparatus for blood speckle detection for enhanced intravascular ultrasound imaging. The present invention utilizes the fact that the energy scattering strength from blood exhibits a high frequency dependency, while the scattering strength from tissue lacks a strong frequency dependency. In specific embodiments, the present invention may provide a particularly simple and useful solution for addressing the problem of blood speckle in intravascular ultrasound imaging, especially in situations where the blood may have a scattering strength similar to that of tissue and/or where the blood is moving slowly or not at all.
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