IEC 61223-2-7:1999

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
      3.3 Definitions
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 Test equipment
      5.2 Test procedures
      5.3 Data evaluation
      5.4 Criteria to be applied
      5.5 Action to be taken
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 actions to be taken
Annex D (informative) Possible faults and corrective actions
Figure 1 - Measuring arrangement for intra-oral dental
           RADIOGRAPHY

Describes a method to check, in terms of functional parameters, that the constancy of the quality of images produced by intra-oral dental X-ray equipment is maintained after installation, calibration and adjustment have been carried out. This standard defines: - the functional parameters, which describe the performance of X-ray equipment for intra-oral dental radiographic examination; - methods of checking, whether variations in measured functional parameters meet established criteria, in order to ensure that the conditions for adequate imaging performance are maintained, while unnecessary irradiation of the patient is avoided.