Figure 9-4. Cassette being tested with paper clips.
9-10. EVALUATION AND INTERPRETATION
a. Place the processed film on the illuminator.
b. View the films from a distance of 6 feet or more.
c. Look for fuzzy or blurry areas on the wire.
d. Make notes on the appropriate form of the cassettes demonstrating poor film-
There are no federal regulations governing the film-screen contact test.
Usually, if there is poor screen-film contact on the edges of the film, the
cassette is permitted to remain in service because the part under examination
is usually in the middle of the radiograph.
9-11. PREVENTIVE MAINTENANCE
Perform the test routinely:
a. Every 6 months.
b. Upon acquisition of new cassettes.
c. Following repairs of damaged cassettes.