Owandy Radiology i-max touch 3D, User Manual

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User Manual
– 2D exam
NIMXEN020I
Owandy Radiology SAS
80
Note
During panoramic exams, the value of the exposure parameters varies according
to a fixed curve, to compensate for variations in absorption by the patient's tissues.
in this way, it is possible to obtain a good uniformity of the image contrast. In
particular, the chosen value of the kV is lowered in the initial and end sections of
the panoramic exam and increased in the incisors/canine zone.
The tube current varies according to the kV, also if the set value is slightly increased
on the initial/end sections. These variations have the effect of compensating for
greater X-ray absorption in the spinal column area. As an example, the variation of
the parameters follows the curve below:
Set value
Actual value mA
Actual value kV
The values displayed during the panoramic exam correspond to the ones chosen
by the user, while the real value in the various positions of the X-ray cycle can be
different; in any case, the system guarantees that the accuracy of the exposure
parameters is always within the limits set by IEC 60601-1 international standards
for the safety of medical devices. In particular, in accordance with IEC 60601-2-63,
the maximum deviation (including the correction according to the above curve and
instrumental doubt) is within ±10% for the kV, while for the tube current it is within
±15%.