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Automatic X-ray exposure control system and method of use

  • US 5,617,462 A
  • Filed: 08/07/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 08/07/1995
  • Status: Expired due to Term
First Claim
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1. A method for controlling X-ray exposure when imaging an area of anatomy, the method comprising:

  • (a) emitting X-rays from an X-ray source, through a piece of anatomy and to an X-ray receiver so as to form an image;

    (b) determining absolute intensity for the image and selecting an area of the image containing anatomy of interest for further processing;

    (c) determining the peak intensity and the average intensity within the selected area;

    (d) combining the peak intensity and the average intensity to give a single value representative of density for the anatomy being imaged; and

    (e) comparing the single value against a predetermined exposure control table and adjusting the emission of X-rays to achieve a desired exposure for the anatomy density as represented by the single value.

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