Myray ZEN-X Instrucciones De Uso página 36

those normally used for conventional x-ray film.
The following chart specifies the exposure times to be used for two different focal distances (according to the collimator
used) between the focal spot and skin; the system considers that the distance between the skin and sensor's active
surface is approximately 5 cm.
● Tables are referred to a DC generator 60-65 kV, 8 mA, if 4mA is selected it's necessary to double the time.
● If a 70 KV high frequency generator is used, the time given in the table has to be reduced approximately 1/4.
● If edentulous areas are irradiated, the sensor may provide images that are too blackened in the missing areas of
the irradiated radiographic subject. In these cases, reduce the time indicated in the table by about 1/4.
● The best results are obtained with a 60 KV high frequency generator, square collimator and 30 cm focus-skin dis-
tance (refer to the relevant table).
● To more effectively monitor the distances, the MyRay® centering device equipped with fixed spacer between the
centering ring and sensor should be used.
● Before attempting to use the sensor on a patient, practice by taking a few x-ray pictures on unanimated objects
with your own x-ray unit.
● Do no exceed the dose in the chart.
MyRay RX DC HyperSphere, RX DC eXTend
®
This new generation x-ray generator is specifically designed for use with digital systems.
In fact, it offers 25 different sensitivity settings ("F" factor) to be employed with the digital x-ray receiver used; select the
desired setting with the wireless handheld:
- set F=15 for use with the ZEN-X / ZEN-Xi system.
Factor F should be decreased if the images are very dark, according to the positioning technique used.
MyRay RX AC
®
This x-ray generator has a selection for digital receivers, shown by a computer icon on the handheld. Make sure the
indicator light associated to this function is on. Use the buttons that represent teeth to view the exposure times based
on sensitivity factor "S". This factor can be changed with keys + and - on the handheld:
- set mode sensor "on" and S=8 for use with the ZEN-X / ZEN-Xi system.
RX DC - Cefla Dental Group
It is the high frequency x-ray generator prior to MyRay
factors for traditional film and a setting for digital receivers, it is still possible to save the preferred exposure times.
To correctly use in conjunction with the ZEN-X / ZEN-Xi system, select 60 kV and DIGIT from the control panel. If a
12" long collimator is used, set to 8 mA; with an 8" collimator, set to 4 mA (the light for the selected function should be
on).
To save the exposure times suitable for use with the ZEN-X / ZEN-Xi system, select "ADULT patient" and upper molar
(18, 17, 16) from the control panel. Use keys + and - to reach the item and set the time to 0.250 s.
36 EN
ZEN-X / ZEN-Xi
- OPERATING INSTRUCTION
SETTING EXPOSURE TIMES (IN SECONDS)
Length of the cone
12" (30cm)
0,25 0,16
0,20 0,125
0,16 0,10
0,20 0,125
0,16 0,10
0,20 0,125
0,25 0,16
Length of the cone
8" (20cm)
0,16 0,10
0,125 0,08
0,10 0,063
0,125 0,08
0,10 0,063
0,125 0,08
0,16 0,10
RX DC HyperSphere. Even though it has only 3 sensitivity
®®