Coincidence Of Light And Radiation Fields - Siemens POLYMOBIL Plus Service Instructions Manual

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Fig. 16

Coincidence of light and radiation fields

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
POLYMOBIL Plus
Length
SPR8-125.061.02
Rev. 01 01.00
Measurements
Marker
Side marker
Page 16 of 20
TD SD 24
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Siemens AG
Medical Engineering