Function tests 5 - 5
Siemens AG SPR2-310.662.01 Page 5 of 10 ARCADIS Varic
Medical Solutions Rev. 02 05.06 CS PS SP
5 Check the smallest field size 5
The smallest field size should be < 5 cm x 5 cm at the I.I. input.
The check is made at the TV monitor.
1. Select full I.I. view format.
2. Close the iris diaphragm and select full I.I. view format.
3. Attach a center cross with lead ruler to the center of the I.I. input screen.
4. Switch on fluoroscopy.
5. Read the size of the X iris on the monitor.
6 Check the field limitation 5
Smallest field size at the I.I. input: ........ cm x ........ cm
REGULATION -
Fluoroscopy and radiography using the fluoroscopic imaging assembly with inherently
circular image receptors.
When any linear dimension of the visible area of the image receptor measured through
the center of the visible area is less than or equal to 34cm in any direction, at least 80
percent of the area of the x-ray field overlaps the visible area of the image receptor.
The check is made at the TV monitor.
Determine the central point at the I.I. input. Use adhesive tape to attach center cross
(with lead ruler).
Open the slot collimator, adjust the iris diaphragm to an opening of about 15 cm.
Perform the test in the C-arm position shown.
Fig. 4
Basic position
C-arm to the left
(top view)
C-arm to the right
(top view)
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