4-31. EVALUATION AND INTERPRETATION
a. Measure the density at the reference marker.
b. Record the measurement in the appropriate area of the form.
c. Increasing the kVp should decrease the exposure time; the density should
remain about the same.
If the exposure time fails to decrease or the radiographic film density
increases dramatically, the machine could be malfunctioning.
a. Maintain the same geometry and set up as in the reproducibility test (see
b. Select 80 kVp.
c. Select sensing fields or a combination of fields.
d. Insert a cassette into the Bucky tray and close the Bucky tray.
e. Place a lead number on the phantom to identify the film.
f. Record the necessary data on the appropriate section of the form.
g. Make the exposure.
h. Repeat steps a through g until all three sensing fields have been tested (see
Process all radiographs.