Checking Cut-Off Dose And Resolution (§16 Germany) - Siemens MOMMOMAT 1000 Installation And Start-Up Instructions Manual

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 the acceptance test certificate supplied.
Both tables must be checked.
Ascertain the cut-off dose (K
Test arrangement (front view)
1st exposure
Fig. 7
Procedure:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Siemens-Elema AB
Solna, Sweden
B
NORMI 7
test body
Radiographic system
Film cassette
Double detector
Select 30 kV and AEC (Iontomat) on the control panel.
Place the NORMI 7 test body on the object table flush with the chest wall side.
Slide film cassette into the object table.
Trigger the first exposure.
Note the mAs reading (Q
Develop the film. Measure the resolution (R
form.
Position the dosimeter chamber in the cassette slot.
Select 250 mAs on the control panel.
Trigger second exposure.
Record the dose value (K
(Q )
G(2)
Calculate and record the cut-off dose as follows:
K = K
B
Register 3
) and resolution (R ) with the NORMI 7 test body
g
2nd exposure
NORMI 7
test body
) shown on the control panel.
G(1)
) measured as well as the associated mAs reading
B(2)
Q
G 1 ( )
⋅
------------- -
B 2 ( )
Q
g 2 ( )
SP B7-230.033.07
Rev. 03 11.99
Radiographic system
Dosimeter chamber
Double detector
) and the density (D) and enter in the
g
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