Villa Rotograph EVO, Руководство по обслуживанию

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SERVICE MANUAL
Troubleshooting
(Rev. 1) Rotograph EVO 8-71
8.5.3. Images with artefacts
•
Radiographs that show images with soft tissues or artefacts
The radiographs may show anatomical parts of the soft tissues or
show radiographic artefacts.
Normally the soft tissues might be more or less present depending on
the patient positioning, while the presence of artefacts is strictly
dependent on the presence of foreign objects on the trajectory of the
X-ray beam.
Next figure shows these cases; please consider that all structures
have a bilateral duplicate.
Figure 8-12
Where different references are described among with the
cause/remedy, if any.
Soft tissue Description Artifacts Description
2 Hear soft tissue 1 Dark shadows due to
the air gap between
tongue and palat
3 Nose soft tissue 4 Spine column
7 Epiglottis 5 Leaded apron too high
The part identified with "6" in Figure 8-12 represents the image of the
controlateral mandible (the other side of the mandible). That
therefore results as a clearer area overlapped to the real image. Very
often the resulting darker area in the bottom corner is noticed and is
considered as an artefact of the radiological image.