30 Question RT quiz

1. Lead screens are used for almost all exposures when using:

2. Films that are left between lead screens too long in a high-temperature and high-humidity atmosphere may:

3. The load that can be handled by an X-ray tube focal spot is governed by:

4. The shorter the wavelength of X or gamma rays:

5. A monochromatic X-ray beam:

6. Images of discontinuities close to the source side of the specimen become less clearly defined as:

7. The velocity of electrons striking the target in an X-ray tube is a function of:

8. The sharpness of a radiographic image is determined by?

9. The activity of the fixer diminishes after being used for a period of time because:

10. A light image of a backing "B" on a processed radiograph is probably caused by:

11. Constant agitation of the developer during the development process by means of mechanical stirrers or circulating pumps may:

12. The developer solution is:

13. Which of the following isotopes is commonly used for radiographic purposes:

14. What is one requirement that every radiographic film base must have?

15. The interval between the time a film is placed in a fixer solution and the time when the original diffuse, yellow miliciness disappears is known as:

16. As an effective energy of the radiation increases up to about 250 kV:

17. Two factors which greatly affect the suitability of the target material in an X-ray tube are:

18. The mottling caused by diffraction when radiographing fairly large-grained metallic specimens can be reduced and in some cases eliminated by:

19. Thin sheets of lead foil in intimate contact with X-ray film during exposure increase film density because:

20. The absorption of gamma-rays from a given source when passing through a metal is due to:

21. The speed at which X and gamma rays travel is

22. The emulsion or image layer of the unexposed film contains grains of

23. An X-ray procedure requires an exposure of 5mA minutes at a source-to-film distance of 1000mm. If the source-to-film distance is decreased to 500mm, the exposure required to achieve the same density would be:

24. X-ray films with large grain size:

25. Why are isotopes preferred to X-rays?

26. In certain cases it may be advantageous to pack lead shot around a specimen. The purpose for doing this is:

27. Cobalt-59 becomes Cobalt-60 when it is placed in a nuclear reactor where it captures:

28. The range of thickness over which densities are obtained that are satisfactory for interpretation is a measure of the:

29. Improper geometric factors, poor contact between film and lead foil screens, and graininess of film are possible causes of:

30. One method of reducing radiographic contrast is to:

Login:

Username:
Password:
Not a member? Sign up | Forgot password?

Featured Ads

LIKE US ON FACEBOOK

MOST COMMENTED ON THIS MONTH

Latest GOOGLE Headlines

LATEST BBC Headlines

LATEST NY Times Headlines

LATEST SMH Headlines

Useful Links