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. How are indirect exposure films exposed






2. How long are films fixed






3. What is secondary radiation






4. What is the optimum processing temp.






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






6. which projection is used to view sinuses






7. What Size film is 1 1/4 x 1 5/8






8. How is vertical angulation established with the bisecting technique






9. What size and How is the film places when taking a molar PA in the mixed dentition

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10. What is the annual MPD for pregnant dental assistant






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






12. What type of safelight filter is acceptable






13. What is scatter radiation






14. When viewing a periapical radiograph - you notice that the image of the tooth is extremely long and well defined; However the apices are missing. What technique was used to take the radiograph? What caused the roots to appear long?






15. What anatomical structures appear radiolucent on a dental radiograph






16. What is the purpose of replenishing the developer solution






17. What size bulb is used in safelight






18. What is the major use of topographical occlusal radiographs






19. How far from the work surface must the safelight be mounted






20. How is vertical angulation established with the paralleling technique






21. What is a large dose of radiation given over a short period of time






22. What part of the x-ray machine helps remove heat






23. 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?






24. you notice that a radiograph taken several months ago is brown and spotted. What happened






25. What would cause increased magnification - decreased resolution and edge sharpness






26. What type of film are rare earth screens paired with






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






28. What are the short term effects of radiation exposure






29. your dentist recommends that a patient have xrays taken - bu the patient refuses. What should be done

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30. What radiographs are used to locate a salivary stone in the submandibular duct






31. How does film speed correlate with definition and detail?






32. Mand premolar anatomy






33. when manually processing dental film - you notice the temp. has gotten warmer as the day progressed. How should the developing time be changed?






34. How often should an FMS be taken on an adult with no significant medical history






35. What can be done to minimize gagging when taking radiographs






36. What causes film fogging






37. when viewing a molar BW - What should be on the distal of the film






38. How far should the operator stand from the source of radiation






39. 3 film holding devices used for paralleling






40. What type of film are calcium tungstate screens paired with






41. What periapical technique offers the best diagnostic quality?






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






43. What is the base of dental film composed of?






44. Difference b/w direct and indirect exposure sensor?






45. What causes missing apices






46. What exposure is taken to determine jaw relationships in ortho treatment planning






47. You take a radiograph using 10 mA 30 impulses and 90 kVp - your dentist wants a radiograph with increased contrast and equal density. What settings would you use?






48. Proper patient positioning for bisecting






49. What is the primary beam






50. What is the best method of reducing radiation to the patient