a. Perform a line check. The incoming voltage must be on-line for the output
kVp to be accurate.
b. Place the long axis of the Wisconsin test cassette parallel to the cathode-
anode axis of the x-ray tube.
c. Place the lead sheets on the cassette leaving the 60 kVp region exposed.
d. Center the 60 kVp region under the x-ray tube (see figure 4-2).
Figure 4-2. Testing the 60 kVp region.