Noise Power Spectrum in PROPELLER MR Imaging

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Author(s)

Abstract

The noise power spectrum (NPS), an index for noise evaluation, represents the frequency characteristics of image noise. We measured the NPS in PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction) magnetic resonance (MR) imaging, a nonuniform data sampling technique, as an initial study for practical MR image evaluation using the NPS. The 2-dimensional (2D) NPS reflected the k-space sampling density and showed agreement with the shape of the k-space trajectory as expected theoretically. Additionally, the 2D NPS allowed visualization of a part of the image reconstruction process, such as filtering and motion correction.

Journal

  • Magnetic Resonance in Medical Sciences

    Magnetic Resonance in Medical Sciences 14(3), 235-242, 2015

    Japanese Society for Magnetic Resonance in Medicine

Codes

  • NII Article ID (NAID)
    130005093238
  • Text Lang
    ENG
  • ISSN
    1347-3182
  • Data Source
    J-STAGE 
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