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  • BS EN 62220-1:2004

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    Medical electrical equipment. Characteristics of digital X-ray imaging devices Determination of the detective quantum efficiency

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  17-07-2018

    Language(s):  English

    Published date:  02-02-2004

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Describes the method for the determination of the detective quantum efficiency (DQE) of digital X-ray imaging devices as a function of exposure and of spatial frequency for the working conditions in the range of the medical application as specified by the manufacturer.

    Scope - (Show below) - (Hide below)

    Specifies the method for the determination of the detective quantum efficiency (DQE) of digital X-ray imaging devices as a function of exposure and of spatial frequency for the working conditions in the range of the medical application as specified by the manufacturer. Is applicable to projection digital X-ray imaging devices producing images in digital format that are used for medical diagnosis. It is restricted to digital X-ray imaging devices that are used for radiographic imaging, such as CR systems, selenium-based systems, flat panel detectors, optically coupled CCD detectors, and digital X-ray image intensifiers used for single exposures.

    General Product Information - (Show below) - (Hide below)

    Committee CH/62/2
    Development Note Supersedes 02/563814 DC (02/2004) Superseded by BS EN 62220-1-1, but remains current and will be withdrawn on 16/04/2018. (07/2015)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Superseded By
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 12232:2006 Photography Digital still cameras Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index
    IEC 60601-2-7:1998 Medical electrical equipment - Part 2-7: Particular requirements for the safety of high-voltage generators of diagnostic X-ray generators
    IEC 60336:2005 Medical electrical equipment - X-ray tube assemblies for medical diagnosis - Characteristics of focal spots
    EN 60601-2-7:1998 Medical electrical equipment - Part 2-7: Particular requirements for the safety of high-voltage generators of diagnostic X-ray generators
    ISO 15529:2010 Optics and photonics Optical transfer function Principles of measurement of modulation transfer function (MTF) of sampled imaging systems
    EN 61267:2006 Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characteristics
    IEC TR 60788:2004 Medical electrical equipment - Glossary of defined terms
    ISO 12233:2017 Photography — Electronic still picture imaging — Resolution and spatial frequency responses
    EN 60336:2005 Medical electrical equipment - X-ray tube assemblies for medical diagnosis - Characteristics of focal spots
    IEC 61262-5:1994 Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers - Part 5: Determination of the detective quantum efficiency
    HD 501 : 200S1 MEDICAL RADIOLOGY - TERMINOLOGY
    IEC 61267:2005 Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characteristics
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