ABNORMALITY FINDING IN PROJECTION IMAGES
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United States of America Patent
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Issued Date -
Jan 7, 2010
app pub date -
Jun 1, 2009
filing date -
Jun 4, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention includes a utility for determining the severity of a stenosis in a blood vessel. In one aspect, a method for improving DSA image quality includes: (1) registration of the mask and bolus images prior to subtracting procedure to reduce the artifacts from misalignment; (2) enhancement of the registered DSA image by an anisotropic diffusion technique and a nonlinear normalization technique; and (3) detecting the boundary of blood vessel and quantitatively measuring percentage stenosis, which may be done automatically.
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