Method and apparatus for volumetric image navigation
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United States of America Patent
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Mar 4, 2003
Issued Date -
N/A
app pub date -
Feb 5, 2001
filing date -
Jun 28, 1996
priority date (Note) -
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Abstract
An image guided surgical procedure using an improved registration of pre-operative volumetric scan data is described. Volumetric scan data, acquired before surgery, is registered with respect to the patient and used to construct a volumetric perspective image of the surgical site. The improved registration of the volumetric scan data can be accomplished by generating a pattern of light on the patient's surface by moving a laser beam over the surgical site. The pattern of light is recorded by at least two cameras from different known fixed positions, digitized and used to form a laser reconstruction of the patient surface. This digital surface can then aligned with the volumetric scan data forming an improved volumetric perspective image of the surgical site.
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