Siemens-Elema AB
SPS-UD
RX B7-120.033.01.10.02
MAMMOMAT 300
Solna, Sweden
05.98
65 02 186
12-10
Start-up and functional test of the IONTOMAT
Checking cut-off dose and resolution (§16 Germany)
This test is only required in the Federal Republic of Germany in the area of application of
the X-ray decree. The result must be entered in page 9 of the acceptance test certificate
supplied. Both tables must be checked.
Ascertain the cut-off dose (K
B
) and resolution (R
g
) with the NORMI 7 test body
Procedure:
1
Select 30 kV and AEC (Iontomat) on the control panel.
2
Place the NORMI 7 test body on the object table flush with the chest wall side.
3
Slide film cassette into the object table.
4
Trigger the first exposure.
5
Note the mAs reading (Q
G(1)
) shown on the control panel.
6
Develop the film. Measure the resolution (R
g
) and the density (D) and enter in the
form.
7
Position the dosimeter chamber in the cassette slot.
8
Select 250 mAs on the control panel.
9
Trigger second exposure.
10 Record the dose value (K
B(2)
) measured as well as the associated mAs reading
(Q
G(2)
)
11 Calculate and record the cut-off dose as follows:
1st exposure
2nd exposure
NORMI 7
test body
Double detector
Radiographic system
Film cassette
NORMI 7
test body
Double detector
Radiographic system
Dosimeter chamber
Test arrangement (front view)
K
B
K
B 2
( )
Q
G 1
( )
Q
g 2
( )
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