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System and method for reconstructing image by using straight-line trajectory scan

  • US 20070116175A1
  • Filed: 10/12/2006
  • Published: 05/24/2007
  • Est. Priority Date: 11/21/2005
  • Status: Active Grant
First Claim
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1. A system for reconstructing an image by using a straight-line trajectory scan, comprising:

  • a projection data conversion section for converting projection data from straight-line trajectory scan into projection data under quasi-parallel-beam scan;

    a filtration section for obtaining filtered projection data by convoluting the projection data under quasi-parallel-beam scan with a predetermined convolutional kernel; and

    a back-projection section for reconstructing an image by back-projecting the filtered projection data with a weighting factor.

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