核医学イメージングにおける画像再構成法 Brief Review of Image Reconstruction Methods for Imaging in Nuclear Medicine

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著者

    • 村山 秀雄 MURAYAMA Hideo
    • 放射線医学総合研究所・高度診断機能研究ステーション Division of Advanced Technology for Medical Imaging, National Institute of Radiological Sciences

抄録

Emission computed tomography (ECT) has as its major emphasis the quantitative determination of the moment to moment changes in the chemistry and flow physiology of injected or inhaled compounds labeled with radioactive atoms in a human body. The major difference lies in the fact that ECT seeks to describe the location and intensity of sources of emitted photons in an attenuating medium whereas transmission X-ray computed tomography (TCT) seeks to determine the distribution of the attenuating medium. A second important difference between ECT and TCT is that of available statistics. ECT statistics are low because each photon without control in emitting direction must be detected and analyzed, not as in TCT. The following sections review the historical development of image reconstruction methods for imaging in nuclear medicine, relevant intrinsic concepts for image reconstruction on ECT, and current status of volume imaging as well as a unique approach on iterative techniques for ECT.

収録刊行物

  • 放射線医学物理  

    放射線医学物理 19(3), 130-147, 1999-09-30 

    Japan Society of Medical Physics

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被引用文献:  1件

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各種コード

  • NII論文ID(NAID)
    10004572420
  • 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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