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






2. How are stabe film holders sterilized b/w uses






3. What must a patient remove before taking a PANO






4. What is the annual MPD for radiation workers






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






6. What is characteristic radiation






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






8. What factors would decrease edge sharpness and increase magnification






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






10. What causes a HERRINGBONE effect






11. Proper patient positioning for bisecting






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

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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. How does reducing exposure to the patient benefit the operator






15. What equation is used to calculate the accumulated MPD






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






17. 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?






18. when should radiographs be taken on a pregnant patient






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






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






21. What should be done prior to ordering radiographs for a patient






22. How often must you replenish the solutions in an automatic processor






23. What film would be used to locate a foreign body in the bucco-lingual relationship






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






25. What info should be recorded on the dental radiographic mount

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






27. Explain PSP






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






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






30. What is the most commonly used personnel monitoring devide for dental offices






31. What is thermionic emission






32. when taking a radiograph - you pulls the cone out about 6 inches from the patient's face. What is the result






33. What 2 unites are used to measure biologic effect and dose equivalent






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






35. What are filters made out of...






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






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






38. How are indirect exposure films exposed






39. Max molar anatomy






40. How does packet placement differ b/w bisecting and paralleling






41. when viewing a duplicated radiograph - you notice that the duplicate is too dark. What should you do to duplicating time to lighten the film






42. 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






43. if the source-object distance is cut from 16 to 8 - What must be changed to compensate






44. What looking at manually processed films - you notice small black spots on the films. What caused those spots?






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






46. 3 film holding devices used for paralleling






47. How long does film stay in the developer






48. How does kVp affect patient exposure






49. Film submerged totally in fixer but not in developer






50. you use an exposure time of 10 impulses. How many seconds is this