![header thumbnail](/images/img-default-logo.png)
EN 62220-1:2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
![header thumbnail](/images/img-default-logo.png)
Medical electrical equipment - Characteristics of digital X-ray imaging devices - Part 1: Determination of the detective quantum efficiency
01-06-2015
14-01-2004
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terminology and definitions
4 Requirements
4.1 Operating conditions
4.2 X-RAY EQUIPMENT
4.3 RADIATION QUALITY
4.4 TEST DEVICE
4.5 Geometry
4.6 IRRADIATION conditions
4.6.1 General conditions
4.6.2 Exposure measurement
4.6.3 Avoidance of LAG EFFECTS
4.6.4 IRRADIATION to obtain the CONVERSION FUNCTION
4.6.5 IRRADIATION for determination of the NOISE POWER
SPECTRUM
4.6.6 IRRADIATION with TEST DEVICE in the RADIATION BEAM
5 Corrections of RAW DATA
6 Determination of the DETECTIVE QUANTUM EFFICIENCY
6.1 Definition and formula of DQE(u,v)
6.2 Parameters to be used for evaluation
6.3 Determination of different parameters from the images
6.3.1 Linearization of data
6.3.2 The NOISE POWER SPECTRUM (NPS)
6.3.3 Determination of the MODULATION TRANSFER FUNCTION
(MTF)
7 Format of conformance statement
8 Accuracy
Annex A (normative) Determination of LAG EFFECTS
A.1 Test of additive LAG EFFECTS
A.2 Test of multiplicative LAG EFFECTS
Annex B (normative) Terminology - Index of defined terms
Annex C (informative) Calculation of the input NOISE POWER
SPECTRUM
Annex ZA (normative) Normative references to international
publications with their corresponding
European publications
Bibliography
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.