Villa Sistemi Medicali ENDOS AC, Руководство пользователя

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USER'S MANUAL
Check and correction
(Rev. 7) ENDOS AC/ACP - CE 65
9. 9. 9. 9. CHECK AND CHECK AND CHECK AND CHECK AND CORRECTION OF CORRECTION OF CORRECTION OF CORRECTION OF
POSSIBLE ERRORS IN D
POSSIBLE ERRORS IN D POSSIBLE ERRORS IN D
POSSIBLE ERRORS IN DENTAL X
ENTAL X ENTAL X
ENTAL X----RAYS
RAYS RAYS
RAYS
9.1 9.1 9.1 9.1 Typical faults in intraoral X Typical faults in intraoral X Typical faults in intraoral X Typical faults in intraoral X----rays rays rays rays
•
Too pale X Too pale X Too pale X Too pale X----rays rays rays rays
Possible causes:
•
Inadequate exposure to X-rays (short time)
•
Inadequate development time
•
Damaged developer
•
Developer temperature lower than the requested value
•
Wrong dilutions of developing fluids.
•
Too dark X Too dark X Too dark X Too dark X----rays rays rays rays
Possible causes:
•
Excessive exposure to X-rays
•
Excessive development time
•
Developer temperature over the requested value
•
Wrong dilution of developing fluids
•
Out
Out Out
Out----of
of of
of----focus X
focus X focus X
focus X----rays (impossibility to s
rays (impossibility to s rays (impossibility to s
rays (impossibility to see details)
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ee details)
Possible causes:
•
The patient moved
•
The tubehead moved.
•
X
X X
X----rays with fishbone marks
rays with fishbone marks rays with fishbone marks
rays with fishbone marks
Some intraoral films have a thin lead layer in the box with some
fishbone marks engraved in the lower part. These films can be
exposed to radiation only on one side. If the film is exposed to the
wrong side, the lead layer will absorb a large amount of radiation
during exposure. The result will be a lighter X-ray and the film will
show fishbone marks.