フィルム特性曲線の多項式近似への情報量基準の適用

• 花田 博之

  北海道大学医療技術短期大学部

• 関之山 勝博

  北海道大学医療技術短期大学部

書誌事項

タイトル別名

• Application of information criterion to polynomial approximation for film characteristic curve

抄録

Although various modalities such as CT, CR and MRI are now used for medical images, the conventional screen-film system still plays an important role. The photographic contrast of the screen-film system is an important factor characterizing the image quality of x-ray images and is defined by the use of a characteristic curve. A polynomial approximation is usually applied to density data in order to draw the characteristic curve. This approximation has been based only on visualized judgement. In this paper, AIC in statistics is introduced as a numerical criterion for choosing one from among a number of approximated polynomials. The polynomial approximation is carried out by the introduction of AIC, and this method is accurate and efficient.

収録刊行物

• Japanese Journal of Medical Physics

  Japanese Journal of Medical Physics 15 (3), 220-228, 1995

  一般社団法人 日本医学物理学会

キーワード

• screen-film system
• characteristic curve
• polynomial approximation
• AIC

詳細情報

• CRID: 1390282679650356224
• NII論文ID: 10009590836
• NII書誌ID: AA11137895
• DOI: 10.11323/jjmp1992.15.3_220
• ISSN: 21869855
• ISSN: 09188010
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可