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Mammography apparatus

  • US 4,901,335 A
  • Filed: 11/03/1988
  • Issued: 02/13/1990
  • Est. Priority Date: 11/03/1988
  • Status: Expired due to Fees
First Claim
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1. A method of performing a mammography examination on a human subject, the method comprising the steps of:

  • generating x-rays from an x-ray source;

    exposing an image receptor to x-ray radiation from an x-ray source through a breast of the subject;

    suppressing scattered x-ray radiation produced in the breast relative to the image receptor with a slot grid of circular section centered on an axis through the x-ray source;

    moving the slot grid during the mammography examination to blur areas of negative density cast by the slot grid on the image receptor; and

    initiating and interrupting the generation of x-ray radiation during movement of the slot grid as a function of slot grid position to provide for cumulative homogeneous exposure of the image receptor.

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