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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 is the proper patient position for BW's?






2. What equation is used to calculate the accumulated MPD






3. What looking at a PANO What causes a big smile






4. How much total filtration is required of x-ray machines that operate lower than 70 kVp






5. who discovered x-rays






6. What can be done to increase the life span of processing solutions






7. When taking a radiograph - you pull the end of the PID away from the patients face about 6 inches. How will this affect the radiographic image and patient exposure






8. What 3 types of cells are most radioresistant






9. What causes missing apices






10. 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?






11. How are x-rays formed in the tubehead






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






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






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






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






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






17. 3 film holding devices used for bisecting






18. What is scatter radiation






19. What are occlusal radiographs used to diagnose






20. What is the source-skin distance of x-ray machine that operates at 75 kVp






21. What factors would decrease edge sharpness and increase magnification






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






23. What causes conecut






24. you change from an 8 inch to an 16 inch focal film distance. How is the intensity of the beam affected






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






26. What causes a HERRINGBONE effect






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. What would cause a film to be too light






29. your film badge report sHows that you have received a small amt. of radiation. What should you do






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






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






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






33. What size bulb is used in safelight






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






35. What is the purpose of the lead foil?






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






37. What is added filtration






38. What causes clear film






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






40. What is the purpose of filtration






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






42. When mounting dental radiographs - What is the best way to differentiate max and mand films?






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






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

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






46. What is the primary beam






47. What happens in the fixer






48. How is vertical angulation established with the bisecting technique






49. What type of angulation is used when taking radiographs of the mand. arch






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