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Proceedings Paper

Image simulation system for high-speed soft radiography
Author(s): Kei Takahashi; Eiichi Sato; Michiaki Sagae; Teiji Oizumi; Kazuyoshi Takayama; Yoshiharu Tamakawa; Toru Yanagisawa
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Paper Abstract

SPECTRA is a powerful image simulation system which supported our fundamental research on the optimum control of the flash x-ray spectrum. We have extended this system to manage the real images obtained from various imaging media including the Computed Radiography (CR) system. With the extended SPECTRA we have derived the approximating functions which represented the relationship between the total bremsstrahlung spectrum intensity and the gray level of the images obtained from an imaging medium. These functions well fitted in with our data. These functions were built in SPECTRA and were used for estimating the thickness of the absorber material at arbitrary location on the real image. As a test object for evaluating our estimation method, we used a step-shaped solid model of aluminum which had 3 steps of 5.02, 10.04 and 15.08 mm in thickness, respectively. Estimated thicknesses of aluminum steps were 3.60, 9.40 and 12.2 mm, respectively.

Paper Details

Date Published: 30 May 1995
PDF: 14 pages
Proc. SPIE 2513, 21st International Congress on: High-Speed Photography and Photonics, (30 May 1995); doi: 10.1117/12.209671
Show Author Affiliations
Kei Takahashi, Iwate Medical Univ. (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Michiaki Sagae, Iwate Medical Univ. (Japan)
Teiji Oizumi, Iwate Medical Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)
Yoshiharu Tamakawa, Iwate Medical Univ. (Japan)
Toru Yanagisawa, Iwate Medical Univ. (Japan)

Published in SPIE Proceedings Vol. 2513:
21st International Congress on: High-Speed Photography and Photonics
Ung Kim; Joon-Sung Chang; Seung-Han Park, Editor(s)

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