DIN ISO 9236-1-2007 摄影.医疗放射照相术用屏蔽/胶片系统的感光测定.第1部分:感光曲线形状、速度和平均梯度的测定
Photography - Sensitometry of screen/film systems for medical radiography - Part 1: Determination of sensitometric curve shape, speed and average gradient (ISO 9236-1:2004);English version of DIN ISO 9236:1:2007-08
This part of ISO 9236 specifies methods for the determination of the sensitometric curve shape, average gradient and speed of a single sample of a screen/film/filmholder/processing system for medical radiography.
It is not applicable to special radiographic applications such as mammography, dental radiography and direct-
exposing medical radiographic systems (see for example ISO 5799 ).
The filmholder can be any means that ensures close screen/film contact and prevents the film from being
exposed to ambient light. In particular, the filmholder can be a light-tight vacuum bag, as often used in the
laboratory, or a radiographic cassette as used in medical radiography.