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Radiology 3

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. Reduces exposed silver halide crystals into black metallic silver a makes dark/black areas on film; unexposed silver halide crystals are unaffected by developer






2. A direct function of the dose. No dose threshold; effects do not depend on the magnitude of the absorbed dose (Examples: cancer and genetic mutations)






3. A form of secondary radiation - the result of x-rays that has been deflected from its path by an interaction with matter.






4. The x-ray photon is deflected from its path during its passage through matter






5. Encases/supports teeth






6. Dental x-ray machines operating 70 kVp or below: minimum 1.5 mm aluminum filtration - Dental x-ray machines operating above 70 kVp: minimum of 2.5 mm. of aluminum filtration.






7. V-shaped radiopacity at intersection of floor of nasal cavity and septum






8. Produced when an electron hits the nucleus of a tungsten atom or passes very close to the nucleus of a tungsten atom.






9. An x-ray photon that has its path altered by matter.






10. Space between root and the lamina dura - thin - radiolucent line - healthy PDL is uniform thickness






11. Between canine and lateral incisor - depression is not always visible - radiolucent






12. Bump of bone - muscle attachment; lingual aspect of mandible - 'ring shaped' radiopacitiy below mandibular incisors.






13. Internal ridge of mandible muscle attachment - continuous with internal oblique ridge; radiopaque line






14. A line of union between adjoining bones - found only in skull; appears as radiolucent line






15. Located at the midline of anterior portion of hard palate behind maxillary central incisors; round radiolucency between roots of centrals






16. Tube that travels length of mandible - radiolucent; has cortical walls - houses inferior alveolar nerve






17. Coronal part of alveolar bone - between teeth - cortical bone - radiopaque






18. Hole in bone below mandibular premolars - blood supply to lower lip exits here; radiolucent; often misdiagnosed for periapical pathology






19. Bump or nodule that appears radiopaque






20. Bony prominence posterior to maxillary third molar; radiopaque






21. Bony wall that divides 2 spaces - radiopaque






22. The measurement of the number of electrons moving through a conductor. Measured in amperes (A) or milliamperes (mA)






23. Rounded prominence that appears radiopaque






24. Time between exposure to ionizing radiation and the appearance of observable clinical signs.






25. Sharp - thornlike projection that appears radiopaque.






26. Opening/hole in bone that allows the passage of blood vessels/nerves and appears radiolucent






27. Tubes within maxillary sinus that carry nerves - blood supply - radiolucent band with boundary of two radiopaque cortical bony lines






28. Pear shaped compartment - appears above maxillary incisors. Appears as a large radiolucent area above the maxilla.






29. 68 Degrees F






30. Area of body exposed total body produced more adverse effects






31. Cell damage occurs through formation of 'free radicals'. Free radicals are formed when an x-ray photon ionizes water.






32. Small lymphocyte - bone marrow - reproductive cells - immature bone






33. Occurs frequently due to the high concentration of water in cells.






34. X-radiation created when the primary beam interacts with a matter






35. Reproductive (ova - sperm). Effects are passed on to generations. Genetic damage cannot be repaired






36. Darkness or blackness on film. If kVp is increased film will be darker. If decreased - film will be lighter






37. Two small openings (radiolucent) found on floor of nasal cavity->common exit is incisive foramen






38. Intersection of maxillary sinus and nasal cavity - radiopaque - cortical bone; above maxillary canine.






39. Used to decrease voltage from the incoming 110- or 220-line voltage to the 3 to 5 volts used by the filament circuit.






40. Suggest that no matter how small the amount of radiation received - some biologic damage occurs.






41. Marked prominence that appears radiopaque.






42. Do not occur in dentistry






43. Produced when a high-speed electron dislodges an inner-shell electron from a tungsten atom and causes ionization of that atom. Occurs only at 70 kVp and above.






44. Thin - curved areas of bone - radiopacities within nasal cavity and septum






45. Closed - pointed cone-high production of scatter - not used any longer.






46. Occurs very little; most photons pass through cell with little or no damage






47. More damage can occur in younger or rapidly dividing cells






48. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






49. 'Arranged like a lattice'->soft - spongy bone located between 2 layers of cortical bone; spaces are trabeculae that are filled with bone marrow.






50. Extends from alveolar bone between maxillary centrals to posterior hard palate; seen as a radiolucent line