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Determining and correcting for phase jumps

  • US 4,797,615 A
  • Filed: 09/30/1987
  • Issued: 01/10/1989
  • Est. Priority Date: 09/30/1987
  • Status: Expired due to Term
First Claim
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1. A method of providing a continuous magnetic field map for magnetic resonance systems, said method including the steps of:

  • acquiring a phase image comprising a plurality of elements corresponding to pixels,dividing the phase image into a plurality of subimages each comprising a plurality of said elements wherein the sizes of the subimages are sufficiently small to limit the phase spread of each of the subimages to being no more than 2π

    , andphase unwrapping in each subimage by adding a selected modulo 2π

    constant to each element of the subimage to provide said continuous map of the magnetic field.

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