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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 are common sources of background radiation






2. What is thermionic emission






3. What PPE should be worn when exposing radiographs






4. you notice that the xrays you process are becoming successively lighter than the quality control film you compare it to. What should you do






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






6. What causes conecut






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






8. Proper patient positiong for paralleling

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9. What is the ADA approved method of mounting dental radiographs






10. What device is used to check quality of processing chemicals






11. What is the purpose of the lead foil?






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






13. You process a set of BW's in the automatic processor. three of the BW's are of good quality - but fourth is completely blank. What probably caused this?






14. According to principles of shadow casting - preferred source-object distance






15. How would a film appear if submerged totally in the developer but not in the fixer






16. What is done to the primary beam to make is useful






17. What happens in the fixer






18. The cells from most sensitive to least sensitive






19. What are automatic processors faster than manual processing?






20. What is the name for the part of the target that is struck by electrons






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






22. How should x-ray film be stored






23. What anatomical structures appear radiolucent on a dental radiograph






24. What type lead apron should be used when taking PANO radiographs






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






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






27. when viewing a radiograph - the tooth looks normal in size and shape; However - there is a large blank space at the incisal edge and the apices are missing. What caused this error






28. total filtration required of x-ray machines that operate above 70 kVp






29. using a 16 inch cone focal-film distance - the diameter of the beam measured at the patient's face should be no larger than






30. How long does film stay in the developer






31. When interpreting radiographs - you notice a radiopaque extension or spur off the proximal surface of #30. What do you think this is?






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

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33. How can exposure to the operator be reduced






34. What size bulb is used in safelight






35. What Size film is 7/8 x 1 3/8






36. when taking a paralleling radiograph of a patient with palatal tori - Where is the film places






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






38. 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?






39. What is the proper patient position for BW's?






40. when should radiographs be taken on a pregnant patient






41. What causes clear film






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






43. How do you differentiate b/w max and mand molar when mounting






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






45. What 3 types of cells are most radioresistant






46. What are the short term effects of radiation exposure






47. What is added filtration






48. What does alara stand for






49. Max lat. canine anatomy






50. What is the main source of radiation exposure to the operator







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