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Imaging performance of a digital storage phosphor system
Author(s) -
Hillen W.,
Schiebel U.,
Zaengel T.
Publication year - 1987
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596127
Subject(s) - phosphor , medical imaging , digital imaging , digital radiography , computer science , computer graphics (images) , materials science , image processing , physics , optoelectronics , digital image , radiography , computer vision , artificial intelligence , nuclear physics , image (mathematics)
The imaging performance of a storage phosphor system (SPS) for digital projection radiography is studied in which the x‐ray image is temporarily stored in a light‐stimulable phosphor plate which is subsequently read out by a scanning laser beam. The imaging performance of this system has been analyzed for two types of imaging plates. The spatial resolution is described by the modulation transfer function and the signal‐to‐noise (S/N) ratios of the recorded image data are measured in terms of noise‐equivalent quanta and detective quantum efficiency. Their dependence on detector entrance dose and space and spatial frequency is discussed. A detailed analysis of the different sources of image noise is given to outline the intrinsic features and limits of the system. Finally, the S/N behavior of the SPS is compared with published data of screen–film systems.