Preliminary study of imaging method for MR elastography

DOI
  • Arai Ken
    Graduate School of Engineering, Chiba University
  • Suga Mikio
    Graduate School of Engineering, Chiba University Molecular Imaging Center, National Institute of Radiological Sciences
  • Ozawa Shinya
    Graduate School of Engineering, Chiba University
  • Ikeda Hajime
    Faculty of Engineering, Chiba University
  • Kobayashi Etsuko
    Graduate School of Technology, The University of Tokyo
  • Obata Takayuki
    Molecular Imaging Center, National Institute of Radiological Sciences

Bibliographic Information

Other Title
  • ヒト腹部を対象としたMRエラストグラフィにおける撮像法の検討
  • Comparison of Echo Planner Imaging with Gradient Echo Imaging
  • エコープラナー法とグラディエントエコー法の比較

Description

Magnetic resonance elastography (MRE) is a technique for quantitative and noninvasive assessment of tissue elasticity. Fast imaging is required for breath-hold imaging to reduce the influence of abdominal motion. Spin-echo echo-planner imaging (SE-EPI) is an ultra fast imaging technique which is useful for three-dimensional image acquisition. However, the magnetic field inhomogeneity induce image distortion and artifacts. Additionally, there is a problem with low signal to noise ratio (SNR) of MR image. On the other hand, gradient echo imaging (GRE) can obtain high SNR of shear wave image with less distortion and artifacts whereas a long imaging time. In this study, we compared of imaging method for MRE using SE-EPI and GRE at in-vivo abdominal region. Phantom and in-vivo study were performed to evaluate SNR of shear wave images and shear modulus maps.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001205594243328
  • NII Article ID
    130004604725
  • DOI
    10.11345/japannctam.60.0.175.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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