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 type of x-rays have greater penetrating power - long or short wavelength?






2. What are occlusal radiographs used to diagnose






3. What PPE should be worn when exposing radiographs






4. desired thickness of lead apron






5. What is the purpose of collimation






6. How long is the final rinse






7. which anatomic feature is visible on a PANO - bu not on a PA






8. What is the purpose of the lead foil?






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






10. What is the optimum processing temp.






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






12. What control factors effect the density of a radiograph






13. 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?






14. What factors affect the sharpness of the radiographic image






15. Explain PSP






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






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






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






19. What is penumbra






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






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






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






23. What determines the speed of dental films?






24. How does the reproductive capacity of a cell correlate with radiosensitivity






25. What is the earliest sign of radiation exposure






26. When can the films be exposed to white light






27. With What type film are intensifying screens used?






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






29. 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






30. What is scatter radiation






31. What is the major use of topographical occlusal radiographs






32. 1/10th dosage of gen. public - What are photons






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






34. What is the emulsion composed of?






35. What is the major diff. b/w particulate and electromagnetic radiation






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






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






38. 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?






39. What 3 types of cells are most radiosensitive






40. How can exposure to the operator be reduced






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






42. What factors would decrease edge sharpness and increase magnification






43. Max. centrals anatomy






44. What are automatic processors faster than manual processing?






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






46. 3 film holding devices used for paralleling






47. How many impulses are in .25 seconds






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






49. who discovered x-rays






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