The Dependence Of Quantum Noise On Screen Sharpness

R. S. Holland; R. E. Kellogg

doi:10.1117/12.965409

23 December 1976 The Dependence Of Quantum Noise On Screen Sharpness

R. S. Holland, R. E. Kellogg

Proceedings Volume 0096, Application of Optical Instrumentation in Medicine V; (1976) https://doi.org/10.1117/12.965409
Event: Application of Optical Instrumentation in Medicine V, 1976, Washington, D.C., United States

Abstract

While radiographic mottle is predominantly statistical noise and fundamentally dependent on the number of screen absorbed x-ray photons per exposure, the noise recorded on film and perceived by the radiologist is also dependent on sharpness. To measure this effect quantitatively, we have compared Wiener spectra for systems with equal statistics, but with sequential reductions in the modulation transfer function. The data suggest that many examinations, such as tomograms, gall bladders and angiograms could benefit from a deliber-ate reduction in screen/film sharpness so as to decrease noise in an already unsharp radiologic image.

Citation Download Citation

R. S. Holland and R. E. Kellogg "The Dependence Of Quantum Noise On Screen Sharpness", Proc. SPIE 0096, Application of Optical Instrumentation in Medicine V, (23 December 1976); https://doi.org/10.1117/12.965409

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