残留飛程分布の測定による重イオン線CTのウィナースペクトルと相対電子密度分解能 Wiener Spectrum and Relative Electron Density Resolution in Heavy Ion CT Based on Measurement of Residual Range Distribution

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抄録

The relative electron density resolution was discussed by the Wiener spectrum in the heavy ion CT image. The two dimensional (2D) Wiener spectrum in the CT image was obtained from the one dimensional (1D) Wiener spectrum of the measured residual range distribution of the water phantom for a single projection angle, and the relative electron density resolution in the CT image was calculated from the 2D Wiener spectrum. To examine the usefulness of this method, the relative electron density resolution was also estimated by other two methods; the calculation using the Wiener spectrum of the reconstructed image of the water phantom, and the estimation by the reconstructed image of the electron density resolution phantom. The result of the first method was similar to those of the other two methods. Therefore, it is useful to estimate the relative electron density resolution by the 1D Wiener spectrum of the measured residual range distribution of the water phantom for a single projection angle.

収録刊行物

  • 医学物理 : 日本医学物理学会機関誌 = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics

    医学物理 : 日本医学物理学会機関誌 = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics 23(4), 221-231, 2003-12-31

    一般社団法人 日本医学物理学会

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各種コード

  • NII論文ID(NAID)
    10012751131
  • NII書誌ID(NCID)
    AA11580542
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13455354
  • NDL 記事登録ID
    6955638
  • NDL 雑誌分類
    ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z19-1395
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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