Konica Minolta CS-7 - Beam Quality

162
4.2 MP-Tables
3.4 Beam Quality
Table MP-3
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Mammography X-ray unit S/N:
Target/Filter: Mo/Mo
Measured tube voltage: 28kVp
Pre-set tube load: mAs
lAmm04.003.000.0:noitartliF
:erusopxEY
0
Y
1
Y
2
Rep #1 mGy
Rep #2 mGy
Average exposure: mGy
The direct exposure reading is denoted as Y
0
;Y
1
and Y
2
are the exposure readings with added Al thickness of X
1
and X
2
respectively.
Criteria
Assessed kVp value HVL(mm Al) Pass/Fail
28
Criteria 0.30< HVL<0.40 P Pass
F Fail
Target/Filter:
Measured tube voltage: kVp
Pre-set tube load: mAs
:noitartliF 0.00 0.30 0.40 mm Al
:erusopxEY
0
Y
1
Y
2
Rep #1 mGy
Rep #2 mGy
Average exposure: mGy
HVL (mm Al)
.fc
Assessed
kVp value
HVL (mm Al) for target filter combinations
kVp Mo/Mo
hR/WhR/hRhR/oM
25 0.33+/-0.02 0.40+/-0.02 30.0-/+25.020.0-/+83.0
28 0.36+/-0.02 0.42+/-0.02 30.0-/+45.020.0-/+34.0
31 0.39+/-0.02 0.44+/-0.02 30.0-/+65.020.0-/+84.0
:stnemmoC