MRI装置のQA Quality assuarance of diagnostic magnetic resonance imaging (MRI) system

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著者

    • 遠藤 真広 ENDO Masahiro
    • 放射線医学総合研究所 重粒子治療センター 治療システム開発室 Medical Physics and Engineering Office, Research Center of Charged Particle Therapy, National Institute of Radiological Sciences

抄録

Magnetic resonance imaging (MRI) is now widely used in clinical practices. However MR images may be affected by slight changes of machine performances or environmental conditions, and it could cause misdiagnosis in clinical routines. To maintain and assure image quality in clinical routines, performance of MRI system should be evaluated periodically. In this report we described the NEMA (National Electrical Manufactures Association) standard of evaluation methods of MRI system. The standard included determination of signal to noise ratio (SNR),2-dimensional geometric distortion, image uniformity and slice thickness. We also described the JIS (Japanese Industrial Standard) phantom, which was designed to measure the above characteristics as well as spatial resolution of MRI system in quality assurance (QA) programms.

収録刊行物

  • 放射線医学物理

    放射線医学物理 17(1), 53-62, 1997-03

    Japan Society of Medical Physics

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各種コード

  • NII論文ID(NAID)
    10003723937
  • NII書誌ID(NCID)
    AA11137895
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09188010
  • データ提供元
    CJP書誌  J-STAGE 
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