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B-value calculation and correction using a linear segment gradient waveform model

  • US 6,670,812 B1
  • Filed: 09/13/2002
  • Issued: 12/30/2003
  • Est. Priority Date: 09/13/2002
  • Status: Expired due to Term
First Claim
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1. A method for calculating a b-value comprising:

  • generating a gradient waveform comprising a plurality of timing data points and one or more waveform data points using a magnetic resonance imaging technique;

    calculating two or more corner points associated with the gradient waveform;

    determining an integration start point such that the start point corresponds to an excitation pulse generated by the magnetic resonance imaging technique;

    determining an integration end point such that the end point corresponds to an echo time resulting from the excitation pulse;

    generating an area sum by integrating one or more linear waveform segments between the start point and the end point wherein each linear waveform segment is defined by a line connecting adjacent corner points; and

    calculating the b-value using the area sum.

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