• NBN EN 60336 : 2006

    Current The latest, up-to-date edition.

    MEDICAL ELECTRICAL EQUIPMENT - X-RAY TUBE ASSEMBLIES FOR MEDICAL DIAGNOSIS - CHARACTERISTICS OF FOCAL SPOTS

    Available format(s): 

    Language(s): 

    Published date:  12-01-2013

    Publisher:  Belgian Standards

    Sorry this product is not available in your region.

    Add To Cart

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

    Committees responsible
    National foreword
    Methods
    Introduction
    Section 1. GENERAL
    1.1 Scope and object
    1.2 Normative references
    1.3 Terminology
    Section 2. FOCAL SPOT SLIT RADIOGRAMS
    2.1 Scope
    2.2 Test equipment
    2.3 Test arrangement
    2.4 Operating conditions
    2.5 Production of the FOCAL SPOT SLIT RADIOGRAMS
    2.6 Statement of compliance
    Section 3. FOCAL SPOT PINHOLE RADIOGRAMS
    3.1 Scope
    3.2 Test equipment
    3.3 Test arrangement
    3.4 Operating conditions
    3.5 Production of the FOCAL SPOT PINHOLE RADIOGRAMS
    3.6 Statement of compliance
    Section 4. FOCAL SPOT STAR RADIOGRAMS
    4.1 Scope
    4.2 Test equipment
    4.3 Test arrangement
    4.4 Operating conditions
    4.5 Production of the FOCAL SPOT STAR RADIOGRAMS
    4.6 Statement of compliance
    Section 5. DETERMINATION OF THE FOCAL SPOT DIMENSIONS
    5.1 Scope
    5.2 Specified NOMINAL FOCAL SPOT VALUES
    5.3 Measurement and determination
    5.4 Evaluation and statement of compliance
    Section 6. MODULATION TRANSFER FUNCTION
    6.1 Scope
    6.2 Specified MODULATION TRANSFER FUNCTIONS
    6.3 Measuring equipment and measuring arrangement
    6.4 Measurement
    6.5 Calculation of the MODULATION TRANSFER FUNCTION
    6.6 Presentation of the MODULATION TRANSFER FUNCTION
    6.7 Evaluation and statement of compliance
    Section 7. STAR PATTERN RESOLUTION LIMIT
    7.1 Scope
    7.2 Specified STAR PATTERN RESOLUTION LIMIT
    7.3 Measurement
    7.4 Determination of the STAR PATTERN RESOLUTION LIMIT
    7.5 Evaluation and statement of compliance
    Section 8. BLOOMING VALUE
    8.1 Scope
    8.2 Specified BLOOMING VALUE
    8.3 Determination of the BLOOMING VALUE
    8.4 Evaluation and statement of compliance
    Annexes
    A (informative) Supply of SLIT CAMERAS, PINHOLE
         CAMERAS and STAR PATTERN CAMERAS
    B (informative) Alignment to the REFERENCE AXIS
    C (informative) Index of defined terms
    Tables
    1 Magnification for FOCAL SPOT SLIT RADIOGRAMS
    2 LOADING FACTORS
    3 Dimensions of the pinhole
    4 Magnification for FOCAL SPOT PINHOLE RADIOGRAMS
    5 Permissible values of FOCAL SPOT dimensions for
         NOMINAL FOCAL SPOT VALUES
    6 Standard magnification for MODULATION TRANSFER
         FUNCTIONS
    7 Standard magnification for STAR PATTERN RESOLUTION
         LIMIT
    8 LOADING FACTORS for the determination of the
         BLOOMING VALUE
    Figures
    1 Essential dimensions of the slit diaphragm
    2 Alignment of the SLIT CAMERA
    3 References dimensions and planes
    4 Directions of evaluation over distorted FOCAL SPOTS
    5 Essential dimensions of a pinhole diaphragm
    6 Alignment of the PINHOLE CAMERA
    7 Essential dimensions of the test pattern
    8 Alignment of the STAR PATTERN CAMERA
    9 Alignment of the slit of the microdensitometer
    10 Limitation of input data
    11 Image of the test pattern
    B.1 Projection of the ACTUAL FOCAL SPOT on the
         REFERENCE PLANE

    Abstract - (Show below) - (Hide below)

    Applies to FOCAL SPOTS in medical diagnostic X-RAY TUBE assemblies for medical use, operating at X-RAY TUBE VOLTAGES up to and including 200 kV.

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

    Development Note Supersedes NBN C 74 336 (10/2003)
    Document Type Standard
    Publisher Belgian Standards
    Status Current
    Supersedes
    • 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, flexibile and cost effective