Journal of the Korean Magnetic Resonance Society (한국자기공명학회논문지)

Korean Magnetic Resonance Society (한국자기공명학회)
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Partial Solution for Concomitant Gradient Field in Ultra-low Magnetic Field: Correction of Distortion Artifact

  • Lee, Seong-Joo (Quantum Magnetic Imaging Team, Korea Research Institute of Standards and Science (KRISS)) ;
  • Shim, Jeong Hyun (Quantum Magnetic Imaging Team, Korea Research Institute of Standards and Science (KRISS))
  • Received : 2020.09.14
  • Accepted : 2020.09.16
  • Published : 2020.09.20
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Abstract

In ultra-low field magnetic resonance imaging (ULF-MRI), the strength of a static magnetic field can be comparable to that of gradient field. On that occasion, the gradient field is accompanied by concomitant gradient field, which yields distortion and blurring artifacts on MR images. Here, we focused on the distortion artifact and derived the equations capable of correcting it. Its usefulness was confirmed through the corrections in both simulated and experimental images. This solution will be effective for acquiring more accurate images in low and/or ultra-low magnetic fields.

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References

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