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Publication Detail
Coil-based artifact reduction
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Atkinson D, Larkman DJ, Batchelor PG, Hill DL, Hajnal JV
  • Publisher:
    Wiley
  • Publication date:
    01/10/2004
  • Pagination:
    825, 830
  • Journal:
    Magnetic Resonance in Medicine
  • Volume:
    52
  • Issue:
    4
  • Print ISSN:
    0740-3194
  • Keywords:
    Algorithms, Aorta, physiology, Artifacts, Blood Flow Velocity, Equipment Design, Head Movements, Humans, Image Processing, Computer-Assisted, methods, Magnetic Resonance Imaging, instrumentation, Research Support, Non-U.S.Gov't
  • Addresses:
    Division of Imaging Sciences, Guy's Hospital, Kings College London, London SE1 9RT, UK. David.Atkinson@kcl.ac.uk
  • Notes:
    DA - 20040929
Abstract
Multiple MRI receiver coils provide extra information and canenable the reconstruction of multiple images using data fromdifferent combinations of coils. Comparison of these imagesshows that artifacts due to motion or flowing blood appear withdifferent intensities due to the differing coil sensitivities. Typically,the artifact appears amplified in regions of low coil sensitivity.An optimization routine was developed to correct for theartifact by comparing reconstructions from various coil combinationsand favoring a self-consistent solution. It is demonstratedthat images artifacted by blood flowing in the aorta, ortranslational motion of the head, can be improved. Multiple MRI receiver coils provide extra information and canenable the reconstruction of multiple images using data fromdifferent combinations of coils. Comparison of these imagesshows that artifacts due to motion or flowing blood appear withdifferent intensities due to the differing coil sensitivities. Typically,the artifact appears amplified in regions of low coil sensitivity.An optimization routine was developed to correct for theartifact by comparing reconstructions from various coil combinationsand favoring a self-consistent solution. It is demonstratedthat images artifacted by blood flowing in the aorta, ortranslational motion of the head, can be improved.
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