1 May 1974 Measurements Of Optical And Noise Properties Of Screen-Film Systems In Radiography
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Abstract
The optical and noise properties of radiographic screen-film systems have often been evaluated by concepts and techniques related to Fourier analysis. Figure 1 illustrates the physical characteristics of these properties. The point spread function (PSF), which is the two dimensional representation of the optical property of the screen-film system, has not been applied experimentally for evaluation. The screen-film system is generally considered to be isoplanatic and isotropic; therefore, the line spread function (LSF) in an arbitrary direction can be used. This function is much simpler to measure than the PSF. In the spatial frequency domain, the optical property is evaluated by the modulation transfer function (MTF), which is the absolute value of the Fourier transform of the LSF. Other optical characteristics such as the edge response are usually related to the LSF or the MTF.
© (1974) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kunio Doi, Kurt Rossmann, "Measurements Of Optical And Noise Properties Of Screen-Film Systems In Radiography", Proc. SPIE 0056, Medical X-Ray Photo-Optical Systems Evaluation, (1 May 1974); doi: 10.1117/12.954271; https://doi.org/10.1117/12.954271
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KEYWORDS
Modulation transfer functions

Spatial frequencies

X-rays

Point spread functions

Radio optics

Digital imaging

Photography

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