Siemens-Elema AB
SPS-UD
RX B7-120.033.01.10.02
MAMMOMAT 300
Solna, Sweden
05.98
65 02 186
12-8
Start-up and functional test of the IONTOMAT
Checking the film density
The sensitivity to be programmed must be determined by means of test exposures at 25
kV, or kV preferred by the customer, and 20 mm plexiglass.
The plexi must extend at least 30 mm behind the rear edge of the detector marking on the
compression plate and 10 mm beyond the chest wall edge of the table.
The detector shall be nearest the chest wall.
When making test exposures, ensure correct positioning of the plexiglass plates.
NOTE!
Detector nearest chest wall. Place the plexi plates in the same position for all exposures
and measure the density as shown above on the emulsion side of the film.
Button D (
) should be used for magnifcation tables and button H (
) for
other object tables (with or without grid).
Start with the sensitivity listed in table 1 and adjust a density of approx. 1.5 for non-mag-
nification tables ("Sensitivity H").
Change to magnification table, if used, and program "Sensitivity D" for the density as
above.
The final values are dependent on the type of cassette used and desired optical density.
Minimum projecting
Length: 10 mm
Plexiglass plate
Object table
40 mm
approx
Measuring
point