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Resolution in radiographic magnification
Author(s) -
Wagner Louis K.,
Cohen Gerald,
Wong WaiHoi,
Amtey Sharad R.
Publication year - 1981
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 - 10.1118/1.594962
Subject(s) - magnification , radiography , optics , resolution (logic) , optical transfer function , aperture (computer memory) , computed radiography , image resolution , computer science , image quality , physics , computer vision , medicine , radiology , artificial intelligence , acoustics , image (mathematics)
Radiographic resolution and image sharpness are analyzed as a function of magnification for a few screen/film systems and a microfocal spot x‐ray tube. Resolution and sharpness are described in terms of both MTF and effective aperture. The analysis demonstrates advantages of magnification for any combination of radiographic screen/film system and x‐ray focal spot, and, in addition, allows one to compare different screen/film systems each used at different magnifications. Such an analysis is applicable to any radiographic system and may serve as a guide in selecting screen/film systems for use in magnification procedures.