Durr Dental VistaScan Mini Notice De Montage Et D'utilisation page 86

Troubleshooting
Problem
Shadow on the X-ray im-
age
X-ray image cut off, part
EN
missing
Software unable to com-
bine the data to make a
complete image
X-ray image has strips on
image
Light strips in the scan-
ning window
34
Probable cause
Image plate removed from the
light protection cover before
scanning
The metal part of the X-ray tube
is in front of the X-ray beam
Faulty edge masking in imaging
software
The X-ray dose on the image
plate was insufficient
Amplification (HV value) is set too
low in the software
Unsuitable scanning mode select-
ed
The setting for the threshold value
is too high
Image plate has been pre-ex-
posed, e�g� by natural radiation or
stray X-ray radiation
Parts of image plate exposed to
light during handling
Image plate dirty or scratched
Too much incident ambient light
during the scanning process
Solution
Do not handle image plates
i
without a light protection cover�
Store the image plate in a light
i
protection cover�
When taking an X-ray, make
i
sure there are no metal parts
between the X-ray tube and the
patient�
Check X-ray tube�
i
Deactivate edge masking�
i
Increase X-ray dose�
i
Increase amplification (HV value)�
i
Select a suitable scanning
i
mode�
Reduce the threshold value�
i
If the image plate has been
i
stored for longer than one week,
erase the image plate prior to
use�
Do not expose used image
i
plates to bright light�
Scan image data within half an
i
hour after the exposure�
Clean the image plate�
i
Replace scratched image plates�
i
Darken the room�
i
Turn the unit so that the light
i
does not fall directly onto the
input unit�
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