EN
ONE – User manual Page 38/44
The image quality control acquisition goes through several steps:
1. Before acquiring an image with the sensor, you need to position
the intra-oral test phampton just in front of the collimator of
your X-ray generator unit. You can inclinate the tubehead in
vertical position to manage this operation, or put the test
phampton directly on a table and move the tubehead collimator directly on it.
2. Place the sensor in its location dedicated for. Take care that the sensitive surface of your sensor covers
completely all the details objects of the low-contrast and spatial resolutions phamptons (see image
opposite).
3. Set up your X-ray generator with your usual radiological paramaters corresponded at an upper molar, then
activate the exposure time of your X-ray generator unit.
4. Look at the image obtained at your computer screen to verify the spatial and low-contrast resolutions
parameters. Save both the image and the results in your quality control file.
This protocol gives you a complete procedure to verify the quality of your intra-oral digital installation (both intra-
oral sensor and X-ray generator). To conclude that your devices deliver acceptable images, we recommend you to
use the acceptance criteria recommended by the ANSM (French Agency for the Security of Medical Device –
http://ansm.sante.fr/) and published by decree on December, the 26
th
2008 (“Journal official de la République
Français” - Text 79/192):
Images Spatial Resolution for numerical devices: minimum value accepted=5pl/mm (refer to chapter 5.4.4
of the decree),
Images Low-Contrast Resolution for numerical devices: minimum value accepted=1mm (refer to chapter
5.5.3 of the decree).
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