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An interlaboratory measurement of screen‐film speed and average gradient according to ISO 9236‐1
Author(s) -
Buhr Egbert,
Bergmann Detlef,
Hoeschen Dietmar,
Ailliet Marc,
SirandRey Gérard,
Gazzola Carlo,
Uras Sergio
Publication year - 2000
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 - 10.1118/1.598832
Subject(s) - range (aeronautics) , measurement uncertainty , speed measurement , accuracy and precision , materials science , optics , physics , computer science , mathematics , statistics , computer hardware , composite material
The speed and average gradient of a conventional screen‐film system was measured at four European laboratories. This is the first interlaboratory comparison in which the measurement conditions described in ISO 9236‐1 were applied. The four laboratories used calibrated measurement equipment. The values obtained by the four laboratories were within a range of 14% for the speed and within a range of 8% for the average gradient. These variations are consistent with the expected measurement uncertainty.