BS ISO 9236-3:1999 PDF
Photography. Sensitometry of screen/film systems for medical radiography - Determination of sensitometric curve shape, speed and average gradient for mammography
Photography. Sensitometry of screen/film systems for medical radiography - Determination of sensitometric curve shape, speed and average gradient for mammography
- Статус документа:
- D
- Формат:
- Электронный (PDF)
- Дата публикации:
- 15 апреля 1999 г.
- ICS:
- 11.040.50
- SKU:
- BS ISO 9236-3:1999
Abstract
1 Scope 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.
NOTE — Hereafter, screen/film/filmholder combinations will be referred to as "combinations", and will be referred to as "systems" when the processing is included.
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