IEC 61223-2-9:1999

Foreword
1 Scope and object
      1.1 Scope
      1.2 Object
2 Normative references
3 Terminology
      3.1 Degree of requirements
      3.2 Use of terms
4 General aspects of CONSTANCY TESTS
      4.1 General conditions affecting test
             procedures
      4.2 Establishment of BASELINE VALUES
      4.3 Frequency of CONSTANCY TESTS
      4.4 Identification of equipment,
             instrumentation and test conditions
      4.5 Measured functional parameters
5 Performance tests
      5.1 RADIATION output from the X-RAY SOURCE
             ASSEMBLY
      5.2 Grey-scale image and AUTOMATIC INTENSITY
             CONTROL
      5.3 Threshold contrast for detail of large
             size
      5.4 Limiting resolution for detail of high
             contract for X-RADIATION
      5.5 Frequency of CONSTANCY TESTS
6 Statement of compliance
Annex A (normative) Terminology - Index of defined terms
Annex B (informative) Example of a form for the
                      standardized test report
Annex C (informative) Guidance on action to be taken
Annex D (normative) PHANTOMS AND TEST DEVICES

Applies to those components of X-ray equipment which a) generate, influence the propagation of, and detect X-radiation, and b) process, present and store diagnostic X-ray images in radiological installations with diagnostic X-ray systems for indirect radioscopy and indirect radiography which use X-ray image intensifiers in conjunction with analogue and/or digital storage systems: - closed-circuit television display system - cut films cameras - cine cameras. This standard defines - the essential parameters which describe or affect the performance of the above components of X-ray equipment, and - methods of checking that variations in measured quantities related to those parameters are within acceptable limits, in order to maintain adequate standards of imaging whilst reducing unnecessary irradiation of the patient.