• SN EN 60731 : 1997

    Current The latest, up-to-date edition.

    MEDICAL ELECTRICAL EQUIPMENT - DOSIMETERS WITH IONIZATION CHAMBERS AS USED IN RADIOTHERAPY

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    Published date:  12-01-2013

    Publisher:  Swiss Standards

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

    Foreword
    Introduction
    1 Scope and object
    2 Normative references
    3 Terminology and definitions
    4 General requirements
        4.1 Performance requirements
        4.2 REFERENCE VALUES and STANDARD TEST VALUES
        4.3 General test conditions and methods
             4.3.1 STANDARD TEST CONDITIONS
             4.3.2 Test of components
             4.3.3 RATED or EFFECTIVE RANGE of DOSE
                    (or KERMA) RATES
             4.3.4 Uncertainty of measurement
             4.3.5 Adjustments during test
             4.3.6 Test conditions particular to CHAMBER ASSEMBLIES
             4.3.7 Test conditions particular to MEASURING ASSEMBLIES
             4.3.8 Test conditions particular to STABILITY
                    CHECK DEVICES
             4.3.9 Use of STABILITY CHECK DEVICES
        4.4 Summary tables
        4.5 Classification of equipment according to LIMITS OF
             VARIATION
             4.5.1 FIELD-CLASS DOSIMETER
             4.5.2 REFERENCE-CLASS DOSIMETER
    5 CHAMBER ASSEMBLY performance requirements
        5.1 General performance requirements for (RADIOTHERAPY)
             IONIZATION CHAMBERS
             5.1.1 CHAMBER ASSEMBLY LEAKAGE CURRENT without
                    irradiation
             5.1.2 Stability
             5.1.3 STABILIZATION TIME
             5.1.4 Post-irradiation leakage
             5.1.5 RATED or EFFECTIVE RANGE of DOSE RATE
                    (continuous radiation)
             5.1.6 Maximum RATED DOSE per pulse (pulsed
                    radiation)
             5.1.7 STRAY RADIATION
             5.1.8 Guard/collector insulation
             5.1.9 Cable microphony
             5.1.10 Polarity of polarizing voltage effect
             5.1.11 Electromagnetic compatibility
             5.1.11 Electromagnetic compatibility
        5.2 Performance requirements particular to SHELL
             CHAMBERS
             5.2.1 Dependence on radiation quality
             5.2.2 RATED RANGE of field sizes
             5.2.3 CHAMBER orientation
        5.3 Performance requirements particular to PARALLEL-PLATE CHAMBERS
             5.3.1 Dependence on radiation quality
             5.3.2 RATED RANGE of field sizes
             5.3.3 CHAMBER orientation
        5.4 Performance requirements particular to VENTED
             CHAMBERS
             5.4.1 Atmospheric pressure change
             5.4.2 Temperature
             5.4.3 Humidity
        5.5 Performance requirements particular to
             SEALED CHAMBERS
             5.5.1 Atmospheric pressure change
             5.5.2 Temperature
    6 MEASURING ASSEMBLY performance requirements
        6.1 General performance requirements for (RADIOTHERAPY)
             DOSIMETERS
             6.1.1 EFFECTIVE RANGES
             6.1.2 RESOLUTION of the display
             6.1.3 Repeatability
             6.1.4 Long-term stability
             6.1.5 STABILIZATION TIME
             6.1.6 Electromagnetic compatibility
        6.2 Performance requirements particular to DOSIMETERS
             6.2.1 ZERO DRIFT
             6.2.2 ZERO SHIFT
             6.2.3 NON-LINEARITY
             6.2.4 Range changing
             6.2.5 Dead time
             6.2.6 Temperature
             6.2.7 Humidity
             6.2.8 STRAY RADIATION effect
             6.2.9 Charge leakage
             6.2.10 DOSE RATE dependence of DOSIMETERS
        6.3 Performance requirements particular to DOSE RATE
             meters
             6.3.1 ZERO DRIFT
             6.3.2 ZERO SHIFT
             6.3.3 NON-LINEARITY
             6.3.4 Range changing
             6.3.5 RESPONSE TIME
             6.3.6 Temperature
             6.3.7 Humidity
             6.3.8 STRAY RADIATION effect
        6.4 Performance requirements particular to battery-
             operated MEASURING ASSEMBLIES
             6.4.1 Operating battery life
        6.5 Performance requirements particular to supply
             mains-operated MEASURING ASSEMBLIES
             6.5.1 Mains voltage - static
             6.5.2 Mains voltage - variation during a measurement
    7 STABILITY CHECK DEVICE performance requirements
        7.1 General performance requirements for STABILITY
             CHECK DEVICES
             7.1.1 Long-term stability
             7.1.2 Repeatability
    8 Constructional requirements as related to PERFORMANCE
        CHARACTERISTICS
        8.1 Constructional requirements on CHAMBER ASSEMBLIES
        8.2 Constructional requirements on MEASURING
             ASSEMBLIES
             8.2.1 Adjustment of RESPONSE
             8.2.2 Display device
             8.2.3 Battery indication and compensation
             8.2.4 Input current threshold
             8.2.5 Automatic termination of measurement in
                     the DOSE mode
        8.3 Constructional requirements on STABILITY CHECK DEVICES
             8.3.1 General constructional requirements on
                     STABILITY CHECK DEVICES
             8.3.2 Constructional requirements particular to
                     a radioactive type STABILITY CHECK DEVICES
             8.3.3 Constructional requirements particular to
                     an overall STABILITY CHECK DEVICES
        8.4 Constructional requirements on PHANTOMS and build-up caps
             8.4.1 PHANTOMS
    9 Marking
        9.1 Marking required on CHAMBER ASSEMBLY
        9.2 Marking required on MEASURING ASSEMBLY
        9.3 Marking required on STABILITY CHECK DEVICES
        9.4 Marking required on PHANTOM or build-up cap
    10 ACCOMPANYING DOCUMENTS
        10.1 ACCOMPANYING DOCUMENTS for CHAMBER ASSEMBLY
             10.1.1 INSTRUCTION FOR USE of CHAMBER ASSEMBLY
             10.1.2 Test sheet for CHAMBER ASSEMBLY
             10.1.3 Calibration certificate for CHAMBER ASSEMBLY
        10.2 ACCOMPANYING DOCUMENTS for MEASURING ASSEMBLY
             10.2.1 Instructions for use of MEASURING ASSEMBLY
             10.2.2 Test sheet for MEASURING ASSEMBLY
             10.2.3 Calibration certificate for MEASURING ASSEMBLY
        10.3 ACCOMPANYING DOCUMENTS for STABILITY CHECK DEVICE
             10.3.1 INSTRUCTIONS FOR USE of STABILITY CHECK DEVICE
             10.3.2 Test sheet for STABILITY CHECK DEVICE
             10.3.3 Measurement certificate for STABILITY
                     CHECK DEVICE
        10.4 ACCOMPANYING DOCUMENTS for PHANTOMS and build-up
             caps
             10.4.1 INSTRUCTIONS FOR USE of PHANTOMS and build-up caps
    Annex A (normative) Uncertainty of measurements
    Annex B (informative) Bibliography
    Annex C (informative) Alphabetical index of defined terms
    Annex ZA (normative) Normative references to international
        publications with their corresponding European publications
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Defines performance requirements of RADIOTHERAPY DOSIMETERS as intended for measuring absorbed dose to water or air kerma (and their rates) in photon or electron radiation fields as used in radiotherapy.

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

    Document Type Standard
    Publisher Swiss Standards
    Status Current
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