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 the major use of topographical occlusal radiographs






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






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






4. you change you kVp from 90 to 70 and leave all other factors the same. What is the result






5. What is the x-ray at the center of the primary beam called






6. How can exposure to the operator be reduced






7. The cells from most sensitive to least sensitive






8. Mand premolar anatomy






9. after processing exposed dental film - you notice dark spots on the film. What caused this






10. 3 film holding devices used for paralleling






11. What is formed when high speed electrons strike the target






12. What controls the speed with which the electrons travel from the cathode to the anode






13. What is penumbra






14. What is secondary radiation






15. What 3 types of cells are most radioresistant






16. What is the primary beam






17. What causes conecut






18. What are the 2 units used to measure exposure to radiation






19. What factors would decrease edge sharpness and increase magnification






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






21. How does reducing exposure to the patient benefit the operator






22. desired thickness of lead apron






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






24. What is the earliest sign of radiation exposure






25. What is the annual MPD for radiation workers






26. What is the optimum processing temp.






27. How many impulses are in .25 seconds






28. How is vertical angulation established with the paralleling technique






29. when should radiographs be taken on a pregnant patient






30. What is the purpose of collimation






31. Mand lateral/canine anatomy






32. What film is used to diagnose interproximal decay






33. What are three types of image receptors used in digital radiography






34. when viewing a PANO - you notice that a lot of spine sHows on both side of the film - What caused this






35. when taking a PANO radiograph - the patient is placed too far into the machine. How will the radiograph appear






36. A properly exposed film appears completely black. when was is exposed to white light






37. How does exposure time differ b/w adults and children






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






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






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






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






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






43. How can you differentiate the zygoma from the max sinus in a max posterior PA






44. Size film used for BW on adults when only one film is taken on each side






45. In which area of the tooth is interproximal caries often seen






46. What control factors effect contrast






47. What causes overlapping






48. What Size film is used to take an occlusal radiograph of a 6 yr old child






49. 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?






50. What radiographs are used to determine if a foreign object is located facially or lingually