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Owandy Visteo – User manual
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Positioning of the X-ray generator:
14. Ask the patient to close the mouth and relax the muscles of the jaw.
15. If the positioner is used, move the aiming ring as close as possible to the cheek of the patient and
position the cone of the X-ray generator against the aiming ring making sure that the cone covers
completely the centre of the aiming ring and so the sensitive area of the sensor in the mouth.
If the sensor connection cable is used, position the cone of X-ray generator as close as possible
to the cheek of the patient making sure that the cone covers completely the sensitive area of the
sensor in the mouth.
16. Activate the sensor kit and check on-screen that the sensor toolbar or the sensor icon in the
Windows taskbar is green and that the blue light on the box is lit and the yellow light is not lit.
17. Move to a sufficient distance from the X-ray generator.
18. Activate the X-ray generator. The blue light of the box will blink to indicate the treatment and
transmission of the acquired image. Once the image treated, it appears in the imaging software
and the blue light of the box lights up allowing a new acquisition.
19. Check the image that appears on the computer screen.
4.5.2
Owandy imaging software functions
An exposure percentage is displayed in the acquired image:
•
0 to 80% - under-exposed image, the X-ray dose is too low; increase the X-ray dose on the
generator.
•
80 to 120% - correctly exposed image
•
120 to 200% - over-exposed image, the X-ray dose is too high; reduce the X-ray dose on the
generator.
When the image is displayed in the Owandy QuickVision imaging software, a coloured bar appears in the
top part of the image, this is the exposure bar. This function is available only to users of the Owandy
imaging software.
The white cursor displayed in this bar indicates the exposure level of the image:
•
If the cursor is in the green, the image is correctly exposed.
•
If the cursor is in the red, the image is over-exposed; reduce the exposure time on the generator.
•
If the cursor is in the blue, the image is under-exposed; increase the exposure time on the
generator.
