BS ISO 9236-1:2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
   4.1 Storage and handling conditions
   4.2 Safelights
   4.3 X-ray equipment
   4.4 Air kerma meter
   4.5 Processing
   4.6 Densitometry
5 Determination of sensitometric curve shape
   5.1 General
   5.2 Beam qualities
   5.3 Geometry for curve shape determination
   5.4 Exposure
   5.5 Evaluation
6 Determination of average gradient
7 Determination of speed
   7.1 Definition
   7.2 Beam qualities
   7.3 Geometry
   7.4 Exposure
   7.5 Evaluation
8 Speed and average gradient determination without
   sensitometric curve
9 Uncertainty
10 Test report
Annex A (informative) Rationale
Bibliography

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.

This part of ISO9236 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 ISO5799^[3]).

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.