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System for determining target positions in the body observed in CT image data

  • US 6,359,959 B1
  • Filed: 06/01/1999
  • Issued: 03/19/2002
  • Est. Priority Date: 06/12/1992
  • Status: Expired due to Fees
First Claim
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1. A method of relating the orientation of an external apparatus relative to patient'"'"'s anatomy as determined from computer tomographic (CT) image data, including:

  • (a) attaching to said patient'"'"'s anatomy detectable markers which are detectable in said CT image data to establish a coordinate reference frame relative to said patient'"'"'s anatomy, so that said detectable marker positions can be determined in said CT image data of said patient'"'"'s anatomy;

    (b) taking images from at least one direction with a secondary imaging means, the orientation of said secondary imaging means being determinable relative to external apparatus, so as to detect said detectable markers and thereby determine the orientation of said patient'"'"'s anatomy as visualized in said CT image data relative to said external apparatus that is in a determined orientation relative to said secondary imaging means.

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