Section IV. CUT THICKNESS TEST
The cut thickness test determines the thickness of the tomographic cut.
a. A 45 degree tomographic wedge with a centimeter scale.
b. Plexiglas attenuator blocks 3/4-inch thick.
c. Recording data form.
d. A 10- x 12-inch cassette.
a. Prepare the system to be tested.
b. Insert the 10- x 12-inch cassette into the Bucky tray.
c. Place the x-ray tube in a position perpendicular to the tabletop.
d. Use the system's centering light to:
Position the tomographic test tool.
Align the 12.5 cm mark on the scale to be coincident with the central ray.
For linear systems, the test tool should be oriented so that the scale is parallel
to the direction of the tube travel (see figure 6-8).
e. Select the most commonly used:
f. Select a cut level of 12.5 cm.
g. Record the information on the data form.