Premium
Importance of magnification in star test pattern use
Author(s) -
Van Swearingen Frederick L.,
Watts Finley C.
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 - 10.1118/1.594942
Subject(s) - magnification , optics , physics
The influence of magnification on focal spot size determinations using the star pattern has been re‐examined with interesting results. Two methods of obtaining the magnification have been compared. The resultant information on the consequences of utilizing various magnifications for focal spot size measurement are discussed. Data indicate definitive guidelines for magnification selected.