Siemens POLYMOBIL Plus - Coincidence of Light and Radiation Fields Procedure

POLYMOBIL Plus SPR8-125.061.02 Page 16 of 20 Siemens AG
Rev. 01 01.00 TD SD 24 Medical Engineering
5 - 16 Measurements
Coincidence of light and radiation fields 5
Procedure:
• Insert film into the 24 cm x 30 cm or 10” x 12” cassette and place it on a table or similar
surface.
• Adjust the vertical SID of 100 cm or 40” to the top edge of the cassette using a measuring
tape.
• Use the knobs to set a format of 18 cm x 24 cm or 8” x 10”.
• Switch on the light localizer and align the cassette.
• Apply radiopaque markers (e.g. washers, coins) as shown in Fig. 16 .
Use one washer as a side marker.
• Release an exposure (60 kV, 10 mAs) and develop the film.
• Log the following data on the developed film using a water-resistant felt-tip pen.
- SID setting
- Film size
- Radiation field size
Fig. 16
Side marker
Length
Marker