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






2. What type PID significantly reduces exposure to the patient






3. Film submerged totally in fixer but not in developer






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






5. What type film is faster - intraoral or extraoral






6. You notice on a PANO that the ant. teeth appear narrow and out of focus. What caused this






7. What NC agency is resposible for monitoring dental x-ray equipment






8. What is the maximum size of the x-ray beam at the patients face






9. which radiographic technique records the most accurate image of crowns - roots - and supporting structures in a selected area?






10. What would cause a film to be too dark






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






12. What equation is used to calculate the accumulated MPD






13. What are filters made out of...






14. What would cause the radiographic image to be blurred






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






16. When using D speed film - you use 50 impulses of radiation. How many impulses would you use with E speed film?






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 mounting a film the dot is convex - On What side of the mouth would you find #32?






19. What Size film is used to take a BW on a 3 yr. old






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






21. What part of the x-ray machine is responsible for providing the electrons






22. Mand premolar anatomy






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






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

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25. Proper patient positioning for bisecting






26. when should radiographs be taken on a pregnant patient






27. which dose of radiation is more biologically damaging






28. What is the purpose of a pano






29. What is the bremsstrahlung radiation






30. Max molar anatomy






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






32. What does alara stand for






33. How does kVp affect patient exposure






34. 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?






35. What is the max. permissable fose for radiation workers in systeme interventional units






36. What would cause a properly exposed film to appear dark?






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






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






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






40. How should x-ray film be stored






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






42. What is the best way to reduce exposure to patient






43. A patient complains of pain in the upper molar region. What radiographic exposure should be made?






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






45. What causes missing crowns






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






47. What is thermionic emission






48. What type of safelight filter is acceptable






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






50. What can be done to prevent air bubbles from being trapped on the surface of films during manual processing







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