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ONE – User manual Page 37/44
6.3 Tests Method
It is recommended to the practitioner to test regularly the quality of the imaging digital devices complete line.
You can refer to the standard IEC 61223-3-4 (V2000) which describes the acceptance tests imaging performance of
dental X-ray equipment.
Two parameters have to be inspected to verify the performance of both the X-ray generator unit and the Intra-oral
sensor (see chapters 5.8 and 5.9 of the standard IEC 61223-3-4):
Spatial resolution (pl/mm)
Low contrast resolution (mm)
To control these two parameters, you can use a phampton test object, placed directly in front of the exit of your
Xray unit collimator, and in which you introduce the intra-oral sensor.
Example of an intra-oral test phampton (QUALIMEDIS ref. OTN):
Various circular and rectangular guides sizes for X-
ray units collimator centring
Spatial resolution Phampton test details
Lead thickness: 0.05mm
Spatial resolutions of 2.0, 2.5, 2.8, 3.1, 5.8, 6.3 pl/mm
Low contrast resolution Phampton test details
Ø 1.0, 1.5, 2.0, 2.5mm
Intra-oral sensor location compatible with different
sizes
Collimator centring guide (compatible with
rectangular and circular design)
- Aluminium filter 6.0mm thickness,
- Plexiglas filter 3.0mm thickness,
- Aluminium filter 0.5mm thickness.
Intra-oral sensor location
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