Owandy Radiology i-max touch 3D, Руководство пользователя

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User Manual
–Panoramic image assessment
NIMXEN020I
Owandy Radiology SAS
100
17.1 Proper positioning of the patient
Patient positioning is determining to get good quality radiography. This is due to the fact that the
shape of the focussed area, e.g. of the layer clearly shown on the image, tends to follow the dental
arch and has a non-constant deepness. The objects outside this focused area will therefore
appear blurred on the radiography.
1. The patient should not wear clothes that may interfere with the X-ray beams, also to leave
more space between the patient’s shoulders and the rotating arm of the equipment. Care
must be taken in order to avoid interference between the X-ray beam and the protective apron
worn by the patient.
2. Metal objects (necklaces, earrings etc.) must be avoided; these objects not only create radio-
opaque images in their own position, but also false images projected in other parts of the
radiography, so disturbing the correct view of the anatomy.
3.
Patient’s incisors must be positioned into the reference notch of the bite.
4. Frankfurt plane (plane passing through the inferior margin of the orbit and the upper margin
of the ear canal) must be horizontal.
5. Mid-Sagittal plane must be centered and vertical.
Mid-Sagittal plane
Frankfurt plane
Figure 35
6. Spine should be well stretched, this is normally obtained by asking the patient to step forward,
making sure that all other conditions are unchanged. If not properly extended, the spine will
cause the appearing of a lower exposed area (clearer) in the front part of the image.