Question

17. X-ray instruments should always be: a. Just rinsed and used between patients b. Sterilized c. Sprayed witha disinfectant and then used d. Wiped with a paper towel and then used 18. Tree-like or lightning- like black streaks on a processed film are caused by Bending the film b. Over exposing Underexposing d. Static Electricity a. c. 19. During pregnancy, a patient: Must never be exposed to radiation 6May be irradiated be taking necessary precautions. 20. In your office, the radiographs turn brown with age almost all of the time. What corrective action can you take? a. Films need to developed properly b. The darkroom light needs to be changed c. Wash the films properly after fixing. d. Fix the films adequately. 21. When the ID dot appears near the apex of a tooth, it means that: a. The film is mounted incorrectly. b. The film was placed in the film holder incorrectly. The patient has an abscessed tooth. d. Both a and b c. 22. A darkroom "safelight" should be at least from the film being opened. a. 12 inches b. 2 feet c. 4 feet d. 6 feet

Answer 1

17.b. sterlized

Explanation:' X ray instruments should always be sterlized to kill the germs and other things.

18. D. Static electricity

EXPLANATION:- Opening the film packet too quickly, looks like "lightening" or "tree-like".

19.b. may be irritated be taking necessary precautions.

Explanation:- most of the irradiations will not cause any severe effect on mother as well as foetus.

20. D. Fix the film adequately.

Explanation:' partially fixed film will turn brown in color with age.

21. Both A and B

Explanation;-The film is mounted incorrectly.

The film was placed in the film holder incorrectly.

22. C. 4 feet

Explanation:' A darkroom "safelight" should be at least 4 feet from the film being opened.