Figure 7.1.8.4

Amemiya, Y.; Chikawa, J.

doi:10.1107/97809553602060000604

International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

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International Tables for Crystallography (2006). Vol. C. ch. 7.1, p. 637

Figure 7.1.8.4

Y. Amemiya^a and J. Chikawa^c

Figure 7.1.8.4

Diagram showing a cascade of stochastic elementary processes during X-ray exposure and image read out of the imaging plate. The probability distribution of each stochastic process is described in parentheses together with the mean value. The numbers of the quanta, q_i (i = 0, 5), are also shown. The noise elements of the upper line contribute to the background noise, which reduces the DQE at lower exposure levels. The noise elements of the bottom line contribute to the system fluctuation noise, which reduces the DQE at higher exposure levels (Amemiya, 1995).