Image registration method and apparatus for medical imaging based on multiple masks
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United States of America Patent
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Mar 22, 2011
Grant Date -
Feb 28, 2008
app pub date -
Aug 5, 2005
filing date -
Aug 9, 2004
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Abstract
An image registration method for use in medical imaging includes the steps of: providing a sequence of images each one including a digital representation of a body-part under analysis, selecting a reference image within the sequence, the remaining images of the sequence defining moving images, and re-aligning at least one portion of a moving image with respect to the reference image. The step of re-aligning may include: defining a delimitation mask identifying a region on the reference image with which the at least one portion of the moving image has to be re-aligned, and a feature mask identifying a further region on the reference image within which the re-alignment is calculated, determining an optimized transformation for compensating a displacement of the moving image with respect to the reference image by optimizing a similarity measure, and transforming the at least one portion of the moving image according to the optimized transformation.
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