IEC 61262-5:1994

Foreword
Introduction
Clause
1 Scope
2 Normative reference
3 Terminology
   3.1 Definitions
   3.2 Degree of requirements and reading instructions
4 Requirements
   4.1 Test set-up
   4.2 X-RAY IMAGE INTENSIFIER - Operating conditions
   4.3 Input radiation
   4.4 TEST DEVICE
   4.5 Measurement equipment
5 Determination of the DEFECTIVE QUANTUM EFFICIENCY
   5.1 Preparation
   5.2 Measurement
   5.3 Correction
   5.4 Determination
6 Presentation of the DETECTIVE QUANTUM EFFICIENCY
7 Statement of compliance
Figure 1 - Geometrical relationship of RADIATION SOURCE
           and INPUT APERTURE
Annexes
A Terminology - Index of terms
B Representative test set-up
C Representative scintillation pulse-height spectra
D Bibliography

Applies to electro-optical X-ray image intensifiers for medical use, as components of diagnostic X-ray equipment. Describes a method of determining the detective quantum efficiency (DQE) of X-ray image intensifiers by analysis of the single gamma-ray photon scintillation pulse-height spectrum. Themethod applies only to electro-optical X-ray image intensifiers having output radiance decay rates approximately equal to or faster than that of a P-20 phosphor.