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Table 3-18: Performance Test Worksheet—Small Focal Spot (Mo)
2cm
kV
25
26
27
28
29
30
31
mAs
3cm
O.D.
mAs
4cm
O.D.
mAs
***
O.D.
***
***
***
***
***
***For these kV values, 3 cm or greater may be required.
5.2.5
5.2.6
Input AEC Values - 20 kV - 24 kV and
33 kV - 35 kV (Small Focus)
1. Input the values for MASTER DENSITY,
GAIN, and OFFSET used at 25 kV for each
corresponding value for 20 kV - 24 kV.
AEC Calibration - Small Spot (RH Filter)
Note …While there are currently no
requirements for (Rh) using Small Focal
Spot, some physicists may require calibration be done on any user selectable
kV-Filter combination, therefore, (Rh)
Small Focal Spot calibration may be
required.
2. Input the values for MASTER DENSITY,
GAIN, and OFFSET used at 32 kV for each
corresponding value for 33 kV and above.
3. When complete, return all switches to their
defaults and return unit to normal operations (Run Mode).
1. Repeat Section 5.2.4 using Rhodium (Rh)
filter at 28 kV - 32 kV. (Ensure S4 is set to E;
S6 switch 4 = ON; and S6 switch 8 = ON.)
2. Enter the values from the Small Focal Spot
Performance chart as the starting values for
Rhodium filter calibration.
3. Record the values on the Performance Test
Worksheet, Table 3-19.
4. When complete, return all switches to their
defaults and return unit to normal operations (Run Mode).
Table 3-19: Performance Test Worksheet—Small Focal Spot (Rh)
2cm
kV
28
29
30
31
32
mAs
***
***
***
***
***
3cm
O.D.
mAs
4cm
O.D.
mAs
O.D.
***For these kV values, 3 cm or greater may be required.
Chapter 3: System Setup
3-31