SIREMOBIL Compact Register 5 RXR2-130.061.02 Page 8 of 22 Siemens AG
System Manual Rev. 03 10.03 CS PS 24 Medical Engineering
5 - 8 Adjustments / Programs
Measurement 5
• Switch on fluoroscopy.
• Read and record the value displayed on the dose rate meter.
• If the value measured exceeds 9R/min, the maximum tube current must be reduced. If
the value measured is less than 9R/min, the tube current does not need to be reduced.
• Switch fluoroscopy off.
• Calculate the maximum tube current.
• Multiply the tube current to be programmed by 10, since entry on the service PC must be
made in 1/10mA. Round off the value to the nearest whole number.
Fig. 2
If the maximum tube current was already reduced, the mA value
displayed at 110kV should be recorded and used for the calcula-
tion. The maximum skin dose rate to be set should equal 9R/min.
tube current displayed at 110kV in mA * 9 R/min
= tube current to be programmed in mA
measured dose rate value in R/min
Example: Tube current displayed at 110kV: 5mA
Maximum skin dose rate: 9R/min
Measured dose rate value : 10.2 R/min.
5 (mA) * 9 (R/min)
10.2 (R/min)
= 4.41 (mA) Rounded to the nearest whole number: 44
The value to be programmed is 44.
Preparations 5
• Attach the dose ionization chamber
at a distance of 30 cm from the I.I.
housing (Fig. 3).
• Select one of the FL curves S2 / HC2
or IODINE according to the
programming.
(Push-key)
• Briefly release fluoro.
• Select kV stop mode and enter
110kV (5mA)
30 cm
Input
screen
Chamber
Holder
Sirephos
NOTE
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