d. Replace the cassette/screen in question if you cannot make a determination
for the density variation.
Section II. FILM-SCREEN CONTACT TEST
The film-screen contact test determines the adequacy of the film-screen contact
of the radiographic cassettes. In doing so, it locates those cassettes with poor film-
a. Wire-mesh test pattern (see figure 9-2).
b. Paper clips if no wire mesh is available.
Figure 9-2. Wire mesh test pattern.