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Radial adaptive filter for metal artifact correction

  • US 7,991,243 B2
  • Filed: 02/01/2006
  • Issued: 08/02/2011
  • Est. Priority Date: 02/03/2005
  • Status: Expired due to Fees
First Claim
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1. A diagnostic imaging system which corrects metal artifact streaks emanating from a high attenuating object in an uncorrected tomographic image, the system comprising:

  • a first vector means for determining a direction vector for each pixel, which direction vector points in the direction of the high attenuating object;

    a second vector means for determining an orientation vector for each pixel, which orientation vector coincides with a steepest gradient direction; and

    an adaptive filter means for adaptively filtering the uncorrected tomographic image based at least on the determined orientation of the steepest gradient vector.

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