Function tests 5 - 9
Siemens AG SPR2-310.662.01 Page 9 of 10 ARCADIS Varic
Medical Solutions Rev. 02 05.06 CS PS SP
7.2 Center cassette to radiation field 5
Work sequence:
1. Use the film pairs already exposed (C-arm in basic position, C-arm to the right and
C-arm to the left) to evaluate the center deviation.
2. Place the film pairs one on top of the other.
3. Mark the geometric center of the 24 cm x 30 cm film.
4. Mark the geometric center of the radiation field.
5. Calculate the deviation.
C-arm basic position:
C-arm to the left, tube assembly at stop
C-arm to the right, tube assembly at stop
If the deviations are within the given tolerance, no additional tests are necessary.
Fig. 8
∆ = .......... mm (must be < 19mm), (2% of the SID)
∆ = .......... mm (must be < 19mm), (2% of the SID)
∆ = .......... mm (must be < 19mm), (2% of the SID)
∆A
Rad. field
Film 35 cm x 35 cm
Film (cassette 24 cm x 30 cm)
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