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Self-calibrated tomosynthetic, radiographic-imaging system, method, and device

  • US 5,668,844 A
  • Filed: 10/20/1994
  • Issued: 09/16/1997
  • Est. Priority Date: 04/28/1992
  • Status: Expired due to Term
First Claim
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1. A device for recording radiographic images of a selected object irradiated by a source of radiation comprising:

  • (a) a support;

    (b) a first radiographic recording medium supported on the support for recording a projected radiographic image of the selected object;

    (c) a second radiographic recording medium supported relative to the support in fixed position relative to the first radiographic recording medium and at a selected orientation relative to the first radiographic recording medium for recording a projected radiographic image; and

    (d) a radiopaque fiducial reference supported relative to the support at a fixed position relative to the first and second radiographic recording mediums to permit a projected radiographic image of the radiopaque fiducial reference to be recorded on the second radiographic recording medium wherein the fiducial reference includes a frequency indicator for exhibiting a selected frequency pattern at the fiducial reference.

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