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Image generation from limited projections in positron emission tomography using multi-slice rebinning

  • US 5,744,802 A
  • Filed: 10/25/1995
  • Issued: 04/28/1998
  • Est. Priority Date: 10/25/1995
  • Status: Expired due to Term
First Claim
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1. A method of reconstructing an image in a medical imaging system, the medical imaging system including a plurality of detectors capable of detecting a plurality of rays occurring within a range of projection angles, the rays including transverse rays and oblique rays, the method comprising the steps of:

  • detecting the plurality of rays using the detectors;

    generating a collection of data representative of the detected rays;

    rebinning the data to create a stack of two-dimensional data sets corresponding to individual transverse slice images, wherein the slice images signify in the aggregate a three-dimensional image, wherein for each data set, the data included in said data set corresponds to less than all possible projection angles for the corresponding slice image;

    applying a two-dimensional iterative reconstruction algorithm to each of the data sets to reconstruct a three-dimensional image slice-by-slice from the data sets; and

    axially filtering the rebinned data.

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