Sirona XIOS, Инструкция по эксплуатации и установке

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61 77 476 D 3495
D 3495
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201.01.02
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02 08.2007
39
Sirona Dental Systems GmbH 9 Exposure times
Operating Instructions and Installation XIOS USB HELIODENT DS Serial Nos. 15864 and higher (wall model) and 4416 and higher
9
Exposure times
Explanation
The radiation dose measured by the X-ray sensor based on the selected
exposure times influences the image quality.
The X-ray sensor accepts a wide exposure time margin. The automated
image preprocessing function ensures that the exposures are displayed with
optimal brightness and contrast.
Nevertheless, if the dose is too low, the resulting image may be noisy or
blurred. – In contrast to this, an excessive dose resulting in overexposure of
the sensor may cause dark areas to occur in the image.
Exposure times for size 1 and size 2
XIOS X-ray sensors Only short exposure times are adequate for the highly sensitive size 1 and
size 2 XIOS X-ray sensors.
The exposure parameters specified for Sirona X-ray sensors in the
documentation for the various Sirona intraoral X-ray systems therefore do not
apply to size 1 and size 2 XIOS X-ray sensors.
9.1 HELIODENT DS Serial Nos. 15864 and
higher (wall model) and 4416 and higher
(ceiling model)
Possible exposure times
Recommended exposure times –
with 8" SSD cone and XIOS size 1 /
size 2 X-ray sensors The recommended exposure times are limited to the following values
selected from the possible exposure times:
When the desired patient symbol is set to the tooth symbol, the recommended
exposure times are assigned automatically.
Each tooth symbol is subdivided into three different exposure time settings.
NOTE:
Observe the corresponding specifications of the X-ray device manufacturer.
NOTE: Image degradations resulting from an insufficient
dose
Image degradations resulting from an insufficient dose can be partially
compensated through image postprocessing.
CAUTION: Image degradations caused by overexposure of
the sensor cannot be compensated!