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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsRodney Shaw
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages42-53
Number of pages12
ISBN (Print)0819414581
Publication statusPublished - Dec 1 1994
Externally publishedYes
EventMedical Imaging 1994: Physics of Medical Imaging - Newport Beach, CA, USA
Duration: Feb 13 1994Feb 14 1994

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2163
ISSN (Print)0277-786X

Other

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

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Arimura, H., Ikeda, T., Ikari, T., Kubota, H., Matsumoto, M., Takigawa, A., Nakamori, N., & Kanamori, H. (1994). X-ray tube voltage dependence of Rossmann's three factors in Wiener spectra of radiographic mottles of a low-speed screen/film system. In R. Shaw (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 42-53). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2163). Publ by Society of Photo-Optical Instrumentation Engineers.