Test your basic knowledge |

Radiology 2

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What is reticulation






2. How is vertical angulation established with the bisecting technique






3. in which pericapical projection will the mental ridge be visible






4. What is the major diff. b/w particulate and electromagnetic radiation






5. How does exposure time for children compare to that of an adult






6. What film is used to diagnose interproximal decay






7. What factors affect the sharpness of the radiographic image






8. What is the best method of protecting the thyroid gland from radiation?






9. What is the purpose of collimation






10. According to principles of shadow casting - How should the film be placed in relation to the tooth?






11. What radiograph is used to sHow contrast in soft tissues






12. What would happen to a film that is placed in the fixer prior to development






13. Mand central anatomy






14. What exposure would be useful in identifying salivary stones in the submandibular gland






15. What control factors effect contrast






16. What is the annual MPD for pregnant dental assistant






17. What would cause a film to be too light






18. How should the frequency of radiographic exposures be determined






19. What Size film is 2 1/4 x 3






20. 3 film holding devices used for bisecting






21. What is the latent image






22. When mounting a FMS - you notice that one film is blank. another film is dark - the teeth look strange - and it is difficult to determine What film it is. What do you think happened?






23. How should x-ray film be stored






24. In the darkroom - you unwrap a film and place a coin on top of the film for several minutes. when you process the film - you notice a slight - well-defined white circle on the film. What does this mean?






25. What causes elongation






26. How does kVp affect patient exposure






27. How are indirect exposure films exposed






28. What Size film is used to take a BW on a 3 yr. old






29. which dose of radiation is more biologically damaging






30. What is the purpose of taking radiographs of an edentulous patient






31. With What type film are intensifying screens used?






32. What type film is faster - intraoral or extraoral






33. when should radiographs be taken on a pregnant patient






34. desired thickness of lead apron






35. when processing - two films overlap in the developer - but not in the fixer. How would the films appear






36. What must be done to xray fixer priod to disposal






37. What is the area of the skull that is in focus on a pano


38. What is the purpose of the lead foil?






39. What factors would decrease edge sharpness and increase magnification






40. How are x-rays formed in the tubehead






41. When looking at radiographs that were taken several years ago - you notice a brownish stain which makes interpretation difficult. What caused this?






42. What Size film is 1 1/16 x 2 1/8






43. What causes missing crowns






44. What type of safelight filter is acceptable






45. A patient complains of pain in the upper molar region. What radiographic exposure should be made?






46. What 2 unites are used to measure absorption






47. Size film used for occlusals on adults






48. You notice on a PANO that the ant. teeth appear narrow and out of focus. What caused this






49. According to the principles of shadow casting - preferred object-film distance






50. Size film used for PA's on small children