Abstract

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 σ<i>D</i><sub>mottle</sub> of the density fluctuations has been derived in terms of certain screen—film parameters. It is shown that the Selwyn relation σ<i><sub>D</sub>d</i> =const does not hold for quantum mottle.

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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).
  3. K. Rossmann, J. Opt. Soc. Am. 52, 774 (1962).
  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.
  5. R. C. Jones, J. Opt. Soc. Am. 45, 799 (1955).
  6. K. F. Stultz and H. J. Zweig, J. Opt. Soc. Am. 49, 693 (1959).
  7. J. E. Wilkins, Jr., J. Opt. Soc. Am. 47, 975 (1957).
  8. H. R. Splettstosser (private communication).

Altar, W.

J. W. Coltman, E. G. Ebbighausen, and W. Altar, J. Appl. Phys. 18, 530 (1947).

Cleare, H. M.

H. M. Cleare, H. R. Splettstosser, and H. E. Seemann, Am. J. Roentgenol. 88, 168 (1962).

Coltman, J. W.

J. W. Coltman, E. G. Ebbighausen, and W. Altar, J. Appl. Phys. 18, 530 (1947).

Ebbighausen, E. G.

J. W. Coltman, E. G. Ebbighausen, and W. Altar, J. Appl. Phys. 18, 530 (1947).

Jones, R. C.

R. C. Jones, J. Opt. Soc. Am. 45, 799 (1955).

Rossmann, K.

K. Rossmann, J. Opt. Soc. Am. 52, 774 (1962).

Seemann, H. E.

H. M. Cleare, H. R. Splettstosser, and H. E. Seemann, Am. J. Roentgenol. 88, 168 (1962).

Splettstosser, H. R.

H. M. Cleare, H. R. Splettstosser, and H. E. Seemann, Am. J. Roentgenol. 88, 168 (1962).

H. R. Splettstosser (private communication).

Stultz, K. F.

K. F. Stultz and H. J. Zweig, J. Opt. Soc. Am. 49, 693 (1959).

Wilkins, Jr., J. E.

J. E. Wilkins, Jr., J. Opt. Soc. Am. 47, 975 (1957).

Zweig, H. J.

K. F. Stultz and H. J. Zweig, J. Opt. Soc. Am. 49, 693 (1959).

Other (8)

J. W. Coltman, E. G. Ebbighausen, and W. Altar, J. Appl. Phys. 18, 530 (1947).

H. M. Cleare, H. R. Splettstosser, and H. E. Seemann, Am. J. Roentgenol. 88, 168 (1962).

K. Rossmann, J. Opt. Soc. Am. 52, 774 (1962).

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.

R. C. Jones, J. Opt. Soc. Am. 45, 799 (1955).

K. F. Stultz and H. J. Zweig, J. Opt. Soc. Am. 49, 693 (1959).

J. E. Wilkins, Jr., J. Opt. Soc. Am. 47, 975 (1957).

H. R. Splettstosser (private communication).

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