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SYSTEM AND METHOD FOR QUANTITATIVE IMAGING OF CHEMICAL COMPOSITION TO DECOMPOSE MULTIPLE MATERIALS

  • US 20090207967A1
  • Filed: 02/13/2009
  • Published: 08/20/2009
  • Est. Priority Date: 02/15/2008
  • Status: Active Grant
First Claim
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1. A method for determining a material decomposition using a CT system, the steps comprising:

  • a) imaging an object with the CT system using at least two different energy levels to acquire CT data associated with each of the energy levels;

    b) reconstructing the acquired CT data associated with each of the energy levels to produce image data associated with each of the energy levels;

    c) converting the image data associated with each of the energy levels to attenuation coefficients associated with each of the energy levels;

    d) calculating a ratio of the attenuation coefficients associated with one energy level to the attenuation coefficients associated with another energy level; and

    e) correlating the ratio calculated in step d) to indicate a concentration of a constituent material in the imaged object.

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