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Quality test standard for X-ray mammograms

  • US 4,759,045 A
  • Filed: 10/07/1986
  • Issued: 07/19/1988
  • Est. Priority Date: 10/07/1986
  • Status: Expired due to Fees
First Claim
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1. A method for a determining the reliability of and the reading quality of a radiographic medium produced in carrying out a diagnostic mammographic procedure,said method including the steps ofpositioning a test-material-carrying tab to overlie breast tissue in a path of a radiation source to be directed onto the tissue to be examined for producing a radiation-derived image on a mammographic medium, wherein said test-material is composed of particles whose X-ray image is used for determining the quality of the radiographic medium,activating an X-ray emanating source to generate a beam of radiant energy,directing the beam of radiant energy to impinge on the tissue-carried tab, on the test material of the tab, on the tissue to be examined, and on radiation-sensitive radiographic recording medium,simultaneously exposing the test material, the tissue and the recording medium to the radiant energy for generating a latent image of the irradiated tissue and of the irradiated test material of the tab, andprocessing the exposed radiographic recording medium to provide a visually perceptible image indicative of irradiation impedance characteristics of the tissue in an areal field of exposure of the tissue and simultaneously to provide a qualitative radiological visual reference representation of the test material of the tab,so as to establish objective and reliable indicia of the quality of a mammogram derived from a diagnostic mammographic procedure carried out.

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