3.0T MRIを用いた高速FLAIR法における CSF artifact の抑制について Suppression of CSF Artifact in Fast FLAIR Sequence at 3.0 Tesla

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著者

    • 石森 佳幸 ISHIMORI Yoshiyuki
    • 茨城県立医療大学保健医療学部放射線技術科学科 Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
    • 松田 豪 MATSUDA Tsuyoshi
    • GE横河メディカルシステム株式会社マーケティング本部画像応用技術センター GE Yokogawa Medical Systems Ltd, Marketing Division, Imaging Application Tech Center
    • 宮地 利明 MIYATI Tosiaki
    • 金沢大学医学部医学系研究科保健学専攻 Division of Health Sciences, Kanazawa University Graduate School of Medical Science
    • 木村 浩彦 KIMURA Hirohiko
    • 福井大学医学部病態解析医学講座放射線医学領域 Department of Radiology, Faculty of Medical Sciences, University of Fukui

抄録

The purpose of this study was to suppress CSF flow artifacts in the fast FLAIR sequence at 3.0T MRI. We investigated the influence of thickness of the inversion pulse in the sequence on the high-intensity CSF flow artifacts based on the flow phantom and in-vivo studies at 1.5T and 3.0T. Results demonstrated that CSF flow artifacts at 3.0T were clearly stronger than at as 1.5T. Moreover, 3.0T was influenced by the crosstalk between each inversion pulse compared with 1.5T. The optimal setting of inversion pulse for two interleaving acquisitions for fast FLAIR imaging at 3.0T was approximately 1.5 fold on the basis of sum of slice thickness and slice gap. The appropriate setting of thickness of inversion pulse in fast FLAIR imaging reduces the incidence of CSF flow artifacts at 3.0T.

The purpose of this study was to suppress CSF flow artifacts in the fast FLAIR sequence at 3.0T MRI. We investigated the influence of thickness of the inversion pulse in the sequence on the high-intensity CSF flow artifacts based on the flow phantom and in-vivo studies at 1.5T and 3.0T. Results demonstrated that CSF flow artifacts at 3.0T were clearly stronger than at as 1.5T. Moreover, 3.0T was influenced by the crosstalk between each inversion pulse compared with 1.5T. The optimal setting of inversion pulse for two interleaving acquisitions for fast FLAIR imaging at 3.0T was approximately 1.5 fold on the basis of sum of slice thickness and slice gap. The appropriate setting of thickness of inversion pulse in fast FLAIR imaging reduces the incidence of CSF flow artifacts at 3.0T.

収録刊行物

  • 日本放射線技術學會雜誌

    日本放射線技術學會雜誌 64(12), 1513-1521, 2008-12-20

    公益社団法人日本放射線技術学会

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各種コード

  • NII論文ID(NAID)
    110007008209
  • NII書誌ID(NCID)
    AN00197784
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03694305
  • NDL 記事登録ID
    9773734
  • NDL 雑誌分類
    ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z19-205
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  J-STAGE 
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