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Method and system for roentgenography-based modeling

  • US 9,443,302 B2
  • Filed: 08/20/2010
  • Issued: 09/13/2016
  • Est. Priority Date: 08/20/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method of transforming a plurality of roentgenograms of an object into a 3-D model of the object using a data transformation server, the method comprising:

  • receiving, using one or more processing devices of the data transformation server and from an x-ray imager, a first roentgenogram of an object disposed between an x-ray source and the x-ray imager in a first orientation, wherein the first roentgenogram is generated using the x-ray imager, wherein the first orientation comprises a first angular position of the object relative to an imaging axis, wherein the first roentgenogram includes a first image of;

    the object; and

    at least one reference marker having at least two fiducials, wherein the fiducials are separated by a fixed distance;

    receiving, using the one or more processing devices and from the x-ray imager, a second roentgenogram of the object disposed between the x-ray source and the x-ray imager in a second orientation, wherein the second roentgenogram is generated using the x-ray imager, wherein the second orientation comprises a second angular position of the object relative to the imaging axis, and wherein the second roentgenogram includes a second image of;

    the object; and

    the at least one reference marker;

    receiving, using the one or more processing devices and from the x-ray imager, an angular displacement corresponding to the difference between the first and second angular positions of the object relative to the imaging axis;

    determining, using the one or more processing devices, a first 3-D position of the x-ray source with respect to the x-ray imager in the first orientation using the first image of the at least one reference marker;

    determining, using the one or more processing devices, a second 3-D position of the x-ray source with respect to the x-ray imager in the second orientation using the second image of the at least one reference marker;

    identifying, using the one or more processing devices, a first object outline of the imaged object in the first roentgenogram;

    identifying, using the one or more processing devices, a second object outline of the imaged object in the second roentgenogram;

    generating, using the one or more processing devices, a first 3-D object projection from the first outline of the imaged object to the first 3-D position of the x-ray source;

    generating, using the one or more processing devices, a second 3-D object projection from the second outline of the imaged object to the second 3-D position of the x-ray source;

    aligning, using the one or more processing devices, the first and second 3-D projections of the imaged object in a 3-D reference frame using the angular displacement; and

    transforming, using the one or more processing devices, the first and second 3-D object projections into a 3-D model of the imaged object in the 3-D reference frame.

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