解析的SPECT画像再構成法を用いたSPECTの品質管理 Quality control of SPECT on the basis of analytical SPECT reconstruction methods

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This study presented a procedure of the quality control of SPECT using analytical SPECT reconstruction methods. These are Fourier domain techniques as described by 1) Bellini et al and 2)Inouye et al. which can invert exactly the attenuated Radon transform by Fourier transforms and series expansions. We implemented these methods on a three-detector SPECT system (Picker Prism 3000 XP STEP) and used the JIS SPECT phantom (Kyoto Kagaku, Japan) and several kinds of phantoms for performance evaluation. Projection data were acquired in 128 x 128 matrix with 3 degree steps over 360 degree circular orbit for total scan time of 20 min. Two energy windows, one at 140keV ± 24% (140keV ± 15%) and other 120keV ± 3% (126keV ± 5%) were used for scatter correction. Attenuation coefficient of water 0.15cm<SUP>-1</SUP> for the 140keV gamma ray of "Tc was used. The computing time was less than 10 sec for one slice of 128×128 matrix, thu s the analytical SPECT reconstruction methods are applicable to routine quality control use.

収録刊行物

  • 放射線医学物理

    放射線医学物理 17(1), 18-36, 1997-03

    Japan Society of Medical Physics

参考文献:  36件中 1-36件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10003723874
  • 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  CJP引用  J-STAGE 
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