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Crystal lookup table generation using neural network-based algorithm

  • US 7,827,129 B2
  • Filed: 05/18/2007
  • Issued: 11/02/2010
  • Est. Priority Date: 05/18/2006
  • Status: Expired due to Fees
First Claim
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1. A method for generating a crystal lookup table for use in a nuclear imaging scanner, comprising:

  • generating a block position profile for a multiplicity of events, the block position profile consisting of X and Y position data of said events;

    sequentially reading the X and Y position data of the events in at least one of a histogrammed block position profile for software simulation and on the fly with FPGA hardware implementation;

    inputting the X and Y data for each of said events into a self-organizing feature map as an input vector;

    defining a weight matrix which represents at least one of neuron positions, and detector pixel locations;

    updating the weight matrix for all neurons within a predetermined neighborhood to generate pixel locations; and

    following system training, constructing a crystal lookup table using the generated pixel locations.

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