Sirona Dental Systems GmbH
Gebrauchsanweisung und Installation
5 Operation
64 08 137 D3610
D3610.201.02.09.02 11.2017
91
5.7
Select the exposure parameters for the X-ray
tube assembly
5.7.1
X-ray doses and image quality
Factors for determining the X-ray doses
The dose to be set for X-ray exposure depends primarily on the
following:
● Type of X-ray tube assembly (manufacturer, AC/DC, etc.)
● Distance between focal spot and sensor
● Morphology of patient
● Object, which tooth is to be X-rayed
The dose is adjusted through tube voltage and tube current (specified
by kV/mA) as well as exposure time.
Please refer to the operating instructions for the X-ray unit.
Effects of too low or too high a dose
For physical reasons the digital X-ray sensors behave in the same way
as with X-ray film. The lower the dosage value the higher the image
noise, which in turn generally leads to a poorer detail resolution.
CAUTION
Image degradations caused by overexposure of the sensor cannot be
compensated using subsequent image processing!
Default setting for brightness and contrast
Default settings for brightness and contrast can always be optimally
adjusted through the image preprocessing function, independent of
dose.
5.7.2
Recommended dose for XIOS XG sensors
XIOS XG sensors have a very wide effective dose area, so that,
depending on the object and diagnostic question at hand, the selection
of an optimal parameter adjustment is always possible.
IMPORTANT
Since the exposure time depends on the diagnostic problem as well
as the respective clinical situation, the selection of an optimal
adjustment is the responsibility of the treating physician.
Corresponding values apply to X-ray tube assemblies from other
manufacturers and to AC tube units. However, for optimal image quality
DC tube units should be used.
Please follow the manual for your intraoral X-ray tube assembly.
Содержание XIOS XG Select
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