Strato X User Manual - Image Works

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USER'S MANUAL General instructions for use 6.5 TMJ examination The TMJ examination with open or closed mouth is similar to panoramic, the only difference is that the exposure is performed only on the involved area (Temporal mandibular Joint). then it stops and starts on the second articulation. The operation sequence of the examination is therefore similar to the one described for the panoramic. This TMJ function enables to obtain 4 different images on the same film, by performing two rotational movements. The 4 images represent the right and left condyle of the temporal-mandibular arch (TMJ) with closed mouth and open mouth. Selecting closed mouth exam only the external sectors of the film are exposed, while selecting open mouth exam, the exposure occurs on the inner sectors. The position of the images couples the images corresponding to the same condyle to help a diagnosis. The Figure 14 shows the information related to the single sectors. RIGHT condyle with closed mouth RIGHT condyle with open mouth LEFT condyle with open mouth LEFT condyle with closed mouth 1 st exposure 3 rd exposure 4 th exposure 2 nd exposure R L Figure 14 NOTE: During TMJ the X-rays emission is not continuous since it is interrupted during the transition phases between the different exposures, but is necessary to keep pressed the X-ray button "30" for the whole rotation time. Do not release the X-ray button during the emission interruption if not necessary. The cooling phase of the tubehead occurs at the end of all 4 exposures. In the CHILD position, exposure start is delayed by a few degrees with respect to the ADULT position. (Rev. 1) 51 STRATO X (120V)
USER'S MANUAL General instructions for use 6.5.1 Getting started Press key "18" to select TMJ. The system will set to the following configuration: • ADULT : the upper led of key "11" switches ON • MEDIUM: the central led of key "12" switches ON • MEDIUM ARCH: the central led of key "13" switches ON • TMJ mouth open/closed: the LED of key "18" switches ON LED "23" lights up and the display shows the default exposure parameters, if this is the first TMJ exposure, or the exposure parameters (kV and mA) of the last exposure performed. For example: 7 4 k V 1 0 m A 1 0 . 5 s Once the machine is set, position the chin-support if it had previously been removed (see notes in paragraph 6.3). NOTE: STRATO X is based on a dentition and ascending rami shape as defined by U. Welander et al., Dentomaxillofacial Radiology, 1989, Vol. 18, May. This paper, based on statistic study, enstabilishes a form for the the dentomaxillofacial complex that it is assumed as "standard". A projection geometry that maintains a constant magnification of 1.23 throughout the exposure of this shape has been applied to the STRATO X. Patient’s anatomy can differ in a significant way from the statistical model, so the magnification factor is not maintained and can be different from that value. Based on his experience and competence, the user has to judge this variation. IN ANY CASE, THE TMJ RADIOGRAPHY CANNOT BE USED TO PERFORM CALCULATIONS OF DISTANCES, ANGLES ETC. ON THE FILM. STRATO X (120V) 52 (Rev. 1)
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