X-ray tube voltage dependence of Rossmann's three factors in Wiener spectra of radiographic mottles of a low-speed screen/film system

Hidetaka Arimura, Takaharu Ikeda, Takeshi Ikari, Hideaki Kubota, Masao Matsumoto, Atsushi Takigawa, Nobuyuki Nakamori, Hitoshi Kanamori

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

6 被引用数 (Scopus)

抄録

We obtained the tube voltage dependence of the Wiener spectra of the radiographic mottles of the front and back emulsions made using a low-speed screen and an anticrossover film. The Wiener spectral values of the front emulsion are almost constant, while those of the back emulsion increase with the tube voltage. The spectral values of the front emulsion are greater than those of the back emulsion at most of densities. In order to investigate the reason of these phenomena, we separated the radiographic mottle into the three factors. As a result, we have found that the reason of the dependence of the radiographic mottle is that the contribution of the quantum mottle is less than that of the structure mottle. The Wiener spectral values of the structure mottle of the front screen are greater than those of the back screen for most of the tube voltages. The Wiener spectral values of the front screen decrease and those of the back screen increase with the tube voltage, and the two curves cross at high voltage. These reasons were explained from the spatial fluctuation of the thickness of the screen due to the nonuniform screen structure and the attenuation curve of the x-ray intensity. The tube voltage dependence of the quantum mottle was explained from that of the number of photons absorbed in the screen.

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Rodney Shaw
出版社Publ by Society of Photo-Optical Instrumentation Engineers
ページ42-53
ページ数12
ISBN(印刷版)0819414581
出版ステータス出版済み - 12 1 1994
外部発表はい
イベントMedical Imaging 1994: Physics of Medical Imaging - Newport Beach, CA, USA
継続期間: 2 13 19942 14 1994

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
2163
ISSN(印刷版)0277-786X

その他

その他Medical Imaging 1994: Physics of Medical Imaging
CityNewport Beach, CA, USA
Period2/13/942/14/94

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

フィンガープリント

「X-ray tube voltage dependence of Rossmann's three factors in Wiener spectra of radiographic mottles of a low-speed screen/film system」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル