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X-ray diagnostics installation with spatial frequency filtering

  • US 5,091,925 A
  • Filed: 10/26/1990
  • Issued: 02/25/1992
  • Est. Priority Date: 01/18/1990
  • Status: Expired due to Fees
First Claim
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1. An x-ray diagnositics installation comprising:

  • an x-ray tube which generates an x-ray beam for penetrating an examination subject disposed in the x-ray beam;

    means for detecting an image consisting of x-rays attenuated by the examination subject; and

    video image processing means for converting said x-ray image into video signals forming a video image, said video image processing means including means for spatial frequency high-pass filtering and means for detecting motion in said video image, said means for detecting motion generating a signal dependent on the degree of motion and being connected to said means for spatial frequency high-pass filtering for varying the high-pass filter effect so that said high-pass filter effect is greater for video images having little motion than for video images having greater motion.

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