X-ray tube voltage dependence of detective quantum efficiencies of front and back screens

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

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

1 Citation (Scopus)

Abstract

By separating the Wiener spectra of screen mottle of a medical screen/film system for various tube voltages into those of quantum mottle and structure mottle, we experimentally determined the tube voltage dependence of the detective quantum efficiencies (DQEs) of the front of back screens. For the purpose, using the DQE, the equation of the Wiener spectrum of the quantum mottle has been expressed, and using the equation, our method for separating the Wiener spectra of the screen mottle was modified. Both the DQEs of the front and back screens decreased with tube voltage. The DQE of the front screen at each tube voltage was greater than that of the back screen. We explained the tube voltage dependence of the DQEs using the dependence of the first and second moments of absorbed x-ray energy distribution in the screen obtained using our data of incident x-ray spectra for various tube voltages and Swank's noise-equivalent absorption spectra.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages12-23
Number of pages12
ISBN (Print)0819418781, 9780819418784
DOIs
Publication statusPublished - 1995
Externally publishedYes
EventX-Ray and Ultraviolet Sensors and Applications - San Diego, CA, USA
Duration: Jul 13 1995Jul 14 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2519
ISSN (Print)0277-786X

Other

OtherX-Ray and Ultraviolet Sensors and Applications
CitySan Diego, CA, USA
Period7/13/957/14/95

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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