X-ray tube voltage dependence of three factors of radiographic mottle for single and double emulsions

Hidetaka Arimura, Mitsuhide Okamoto, Takeshi Ikari, Hideaki Kubota, Masao Matsumoto, Atsushi Takigawa, Nobuyuki Nakamori, Hitoshi Kanamori

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

We have obtained the density or x-ray tube voltage dependence of the Wiener spectra of the three factors of radiographic mottle, i.e., quantum mottle, structure mottle, and film granularity, for the double emulsions of the x-ray film. For the purpose, we proposed a method for obtaining the Wiener spectrum of each of the three factors for the double emulsions. To investigate the relation between the Wiener spectra of the quantum mottle for the double and single emulsions, we compared the Wiener spectra of the quantum mottle for the double emulsions with the sum of those for the front and back emulsions on the same radiographs. The Wiener spectral values of the quantum mottle for the double emulsions at 0 mm -1 were greater than the sums of the Wiener spectral values of the quantum mottle for the front and back emulsions at tube voltages of 50 to 100 kV. We found that this was the result which originated from the following phenomena: (1) the noise-equivalent numbers of quanta (NEQ) of the dual screens were roughly equal to the sum of the NEQ of the front and back screens; (2) the squares of the gradients for the double emulsions were more than four times on an average as great as those for the front and back emulsions.

本文言語英語
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
編集者Richard L. Van Metter, Jacob Beutel
ページ574-587
ページ数14
2708
出版ステータス出版済み - 1996
外部発表はい
イベントMedical Imaging 1996: Physics of Medical Imaging - Newport Beach, CA, USA
継続期間: 2 11 19962 13 1996

その他

その他Medical Imaging 1996: Physics of Medical Imaging
CityNewport Beach, CA, USA
Period2/11/962/13/96

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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