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Fluoroscopic tracking and visualization system

  • US 20030088179A1
  • Filed: 12/02/2002
  • Published: 05/08/2003
  • Est. Priority Date: 04/28/2000
  • Status: Active Grant
First Claim
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1. A method for surgical imaging and display of the type including a fluoroscope x-ray source, imaging assembly, display and image processor, for displaying a fluoroscope image for surgical guidance, wherein the method comprises the steps of:

  • (i) positioning a defined set of markers disposed in a pattern so as to be imaged in each pose or view of the imaging assembly, said set of markers being fixed in a rigid carrier;

    (ii) securing a first tracking element against motion with respect to the carrier so that a single measurement by said tracking element determines position of all the markers of the set;

    (iii) identifying images of a subset of said markers in a first view;

    (iv) applying said identified images and the determined marker positions to calibrate a camera model for the shot;

    (v) repeating steps (i)-(iv) for each of a plurality of successive views taken in successively different fluoroscope positions; and

    (vi) registering image data from the plurality of views to a common coordinate system.

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