Checking the Dose Rate
6 - 13
Siemens AG
RXL2-120.815.01
Page 13 of 18
LITHOSTAR Multiline
Medical Solutions
Rev. 02
02.05
CS PS 24
System manual
Dose setting for DR
6
•
Check the size of the PDA.
•
Select I.I. full field view format.
•
No Cu filtering in the beam path.
•
Set the service switch on board D100 to "Service" at the PDA sensor (the service lamp
switches on).
•
Release fluoro and after setting the kV, select "DL-Auto Stop" on the tableside control ;
then end fluoro (This is only necessary, if the PDA sensor is still not visible:
•
Place 6 mm Cu filtration in the beam path and release FL again (at the previously
attained kV values set).
•
The PDA sensor is visible on the monitor; end FL.
•
Adjust the brightness and contrast setting on the monitor until the sensor is clearly visible
•
Measure the round inner measurement field and compare it with the standard value
•
Set switch S1at the PDA sensor back to the starting position on board D100 (service
lamp goes out).
•
Standards table for PDA sizes on the Lucius & Baer monitor
•
Standards table for PDA sizes on the 44 cm Simomed monitor :
•
If the size of the PDA does not fall within the tolerance values, proceed as follows:
- Loosen the set screws on the PDA optics.
- Change the size of the PDA by rotating the optics (plastic ring).
- Release FL and compare the PDA size again with the standards table.
- Repeat this process as many times as necessary to attain the specified PDA size.
- Tighten the set screws.
- Reset service switch S1 on board D100 at the PDA sensor to the starting position (the
service lamp goes out).
33 cm I.I.
23 cm I.I.
PDA size and tolerance in mm
50
+
5
64
+
6
33 cm I.I.
23 cm I.I.
PDA size and tolerance in mm
91
+
9
116
+
11
50 mm
