GE Healthcare
Senographe DS Acquisition System
Revision 1
Operator Manual 5307907-3-S-1EN
Safety Recommendations
1-safety.fm
Page no. 17
Chapter 1
10
Residual images
Repeated exposures made with a high contrast object in the digital detector area may lead to the cre-
ation of a ghost image, caused by an excessive difference of residual charges between cells of the
detector. The time taken for this ghost image to disappear depends upon the magnitude of the residual
charges.
This effect can occur during checks to measure the X-ray field which use a dosimeter ionization chamber
in the beam. To avoid it, use one of the following solutions:
•
Reduce the contrast of the object by including it in a field protected by an X-ray attenuator of ade-
quate thickness.
•
Use the internal dose measurement facility.
•
Protect the digital detector by means of a 3 mm steel plate for the duration of the measurements.
11
Damaged Equipment
CAUTION
If equipment is damaged or fails, have it repaired immediately by authorized GE Service
personnel, even if the damage or failure does not affect the functions you normally use.
The damage or failure can result in a potentially serious patient safety hazard under other
circumstances.
12
Damage to the Digital Detector
CAUTION
The digital detector contains thallium doped cesium iodide, a substance which requires
special precautions for handling and recycling. If the protective casing of the digital detec-
tor sustains damage, please consult your local GEMS representative.
CAUTION
If the digital detector casing is punctured, the detector must be removed by authorized GE
Service personnel wearing protective gloves and dust masks.
FOR
TRAINING
PURPOSES
ONLY!
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