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ISO 9236-3:1999
Photography -- Sensitometry of screen/film systems for medical radiography -- Part 3: Determination of sensitometric curve shape, speed and average gradient for mammography
This part of ISO 9236 specifies methods for determination of the sensitometric curve shape, average gradient and speed of a single sample of a screen/film/filmholder/processing system in mammography.
The filmholder may be any means which ensures close screen/film contact and prevents the film from being exposed to ambient light. In particular, the filmholder may be a light-tight vacuum bag, as often used in the laboratory, or a radiographic cassette as used in mammography.
International Organization for Standardization [iso]