Using The System; Positioning; Positioning The Patient; Positioning The X-Ray Generator - Kodak 2200 User Manual

3. Using the System

Positioning

Positioning the patient

Positioning the x-ray generator

06/2009
Every dental specialist would like to produce high-quality intraoral
radiographs that reveal maximum detail with the minimum dose to the
patient, show teeth and anatomic structures accurately with a minimum of
distortion or magnification, and have optimal density and contrast to
maximize their use for the detection of dental diseases.
To obtain high-quality intraoral radiography with maximum details, take extra
care in all three steps of the radiography process: positioning the patient, the
x-ray generator, and the imaging system; exposing the film or the sensor;
and processing the film.
Seat the patient with the sagittal plane vertical.
•
For radiography of the upper maxillary, the Frankfort plane (nose-ear
plane) must be horizontal.
•
For radiography of the lower maxillary, the occlusal plane must be
horizontal.

Figure 10: Patient positioning

The scissor arm allows you to accurately position the generator for any type
of exposure. The beam-limiting device maintains a distance of at least 20 cm
(8 in.) between the focal spot and the skin, which allows you to use either the
paralleling technique or the bisecting technique.
Paralleling technique
The positioning tool used in the paralleling technique allows you to align the
beam and the receptor. An adapted collimator reduces the dosage by limiting
surface exposure.
Bisecting technique
When using the bisecting technique, do not use a rectangular collimator. This
limits the risk of misaligning the x-ray beam and the image receptor.
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