CPI Indico 100 Series Service And Installation Manual page 221

CPI Canada Inc
3.0 REPRODUCIBILITY (Cont)
3 point = Maximum kV, minimum mA, 100 ms.
2 point = Maximum kV, minimum mAs.
EXP No.
1
2
3
4
5
Calculate standard deviation (S) using formula at beginning of this section:
Calculate reproducibility =
3 point = 50% of maximum kV, 250 ms, mA to give 100 - 500 µR (1 - 5 µGy) dose.
2 point = 50% of maximum kV, mAs to give 100 - 500 µR (1 - 5 µGy) dose.
EXP No.
1
2
3
4
5
Calculate standard deviation (S) using formula at beginning of this section:
Calculate reproducibility =
X-Ray Generator Service Manual Supplement
DOSE (mR)
Calculate each of the differences
ie: DIFF
mR =
1
Repeat for each remaining mR
________
value.
S = _________ (not to exceed 0.045)
mR
Table 2: Reproducibility
DOSE (mR)
Calculate each of the differences
ie: DIFF
mR =
1
Repeat for each remaining mR
________
value.
S = _________ (not to exceed 0.045)
mR
Table 3: Reproducibility
Reproducibility, Linearity, & HVL Testing
DIFFERENCE
= mR - mR.
1
DIFFERENCE
= mR - mR.
1
740917-00
mAs = __________
DIFFERENCE
Square each difference. Then
calculate the sum of the difference
2
Sum of difference = _________
S = __________
mAs = __________
DIFFERENCE
Square each difference. Then
calculate the sum of the difference
2
Sum of difference = _________
S = __________
Rev. A
2
2
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2
2
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