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X-ray exposure system for 3D imaging

  • US 6,079,876 A
  • Filed: 10/16/1998
  • Issued: 06/27/2000
  • Est. Priority Date: 10/17/1997
  • Status: Expired due to Fees
First Claim
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1. An X-ray system comprising:

  • an X-ray source which emits an X-ray beam;

    an X-ray receiver on which said X-ray beam is incident;

    means for moving said X-ray source and said X-ray receiver relative to an examination subject for obtaining a plurality of 2D projections of a region of the subject from a plurality of different projection angles, each of said projection angles having a unique projection geometry of the X-ray source and the X-ray receiver associated therewith, said X-ray source, said X-ray receiver and said means for moving comprising an X-ray apparatus;

    a camera allocated to said X-ray apparatus for following movements of said X-ray apparatus, said camera having a field of view and producing camera signals;

    a position indicator disposed separate from said X-ray apparatus and in said field of view of said camera, said position indicator producing information in said camera signal identifying the projection geometry for each of said different projection angles of said 2D projections, said camera and said position indicator being disposed outside of said X-ray beam emitted by said X-ray source; and

    computer means supplied with said camera signals for identifying the different projection angles of the 2D projections and for reconstructing a 3D image therefrom.

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