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Projection data correction method and apparatus, and radiation tomographic imaging method and apparatus

  • US 6,373,919 B1
  • Filed: 06/12/2000
  • Issued: 04/16/2002
  • Est. Priority Date: 08/10/1999
  • Status: Expired due to Term
First Claim
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1. A projection data correction method comprising the steps of:

  • individually calculating an average value of data and its proximate data, said data constituting a projection of an object to be imaged by penetrating radiation;

    calculating a first product by multiplying said data by a first weighting factor that corresponds to a count of the penetrating radiation from which said data is derived;

    calculating a second product by multiplying said average value by a second weighting factor that is a complement of said first weighting factor with respect to one; and

    adding said first and second products.

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