Owandy One - Page 36

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ONE – User manual Page 36/44
The images are too light or contain
noise, e.g.:
211 1
Film alike mode Auto contrast mode
 The image is under-exposed, the X-ray dose is too low; increase the X-
ray dose on the generator. The percentage that is displayed in the
image indicate the exposure level:
o 0 to 80% - under-exposed image
o 80 to 120% - correctly exposed image
o 120 to 200% - over-exposed image
 Check the dose emitted by the X-ray generator, due to age the dose
can be insufficient. Have the generator checked by a technician when
in doubt.
 The generator is positioned too far from the patient with regard to the
selected dose.
 Check the parameters of your monitor (contrast and brightness) and
avoid reflections on the screen.
The images are too dark, e.g.:
 The image is over-exposed, the X-ray dose is too high; reduce the X-ray
dose on the generator. The percentage that is displayed in the image
indicate the exposure level:
o 0 to 80% - under-exposed image
o 80 to 120% - correctly exposed image
o 120 to 200% - over-exposed image
 Check the parameters of your monitor (contrast and brightness) and
avoid reflections on the screen.
Grey levels seem to be missing in the
image (flat areas of grey appear).
 Check the quality and parameters of the monitor.
 Check the connection of the cable of the screen at the side of the
graphics card and the monitor.
 Check the screen configuration under Windows (screen configuration
panel, it must display colours in at least 24bits.
The image is blurred.
Re-acquire the image:
 The patient has moved during the exposure.
 The generator head was not stabilised and has moved.