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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 52, Iss. 10 — Oct. 1, 1962
  • pp: 1162–1163

Recording of X-Ray Quantum Fluctuations in Radiographs

K. ROSSMANN  »View Author Affiliations

JOSA, Vol. 52, Issue 10, pp. 1162-1163 (1962)

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When radiographic film is exposed with fluorescent intensifying screens, the spatial x-ray quantum fluctuations are recorded on the film as density fluctuations (“quantum mottle”). From the expression for the Wiener spectrum of the mottle, the standard deviation σDmottle of the density fluctuations has been derived in terms of certain screen—film parameters. It is shown that the Selwyn relation σDd =const does not hold for quantum mottle.

K. ROSSMANN, "Recording of X-Ray Quantum Fluctuations in Radiographs," J. Opt. Soc. Am. 52, 1162-1163 (1962)

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  1. J. W. Coltman, E. G. Ebbighausen, and W. Altar, J. Appl. Phys. 18, 530 (1947).
  2. H. M. Cleare, H. R. Splettstosser, and H. E. Seemann, Am. J. Roentgenol. 88, 168 (1962).
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  4. This term is now being used generally in place of what has been variously called "sine-wave response," "contrast-transmission function," etc., in accordance with recommendations formulated in July 1961 by the Subcommittee for Image Assessment Problems of the International Commission for Optics.
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