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






2. Continues from ramus; radiopaque band






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






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






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






6. All cells except reproductive; effects are seen in person irradiated






7. Coulombs per kilogram






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






9. The penetrating x-ray beam that is produced at the target of the anode






10. Superior to internal oblique ridge; anterior border of ramus ends in external oblique ridge; radiopaque band






11. Effects seen years - decades - or generations later






12. 68 Degrees F






13. Gray






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






15. Rate which exposure to radiation occurs and absorption occurs (more damage occurs with high dose due to rapid delivery and does not allow for repair)






16. Aluminum disks between collimator and tubehead seal. Aluminum disks filter long wavelength - low energy x-rays from x-ray beam. 0.5 mm increments






17. Bump or nodule that appears radiopaque






18. Bony prominence posterior to maxillary third molar; radiopaque






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






20. Rounded prominence that appears radiopaque






21. Mostly seen in mandibular nerve/blood supply vertical radiolucent lines






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






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






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






25. Hollow space - cavity that appears radiolucent






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






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






28. Linear prominence that appears radiopaque.






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






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






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






32. Marked prominence that appears radiopaque.






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






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






35. 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.






36. Within maxillary sinus; acts as a division - radiopaque lines sometimes not visible






37. Can increase or decrease the number of electrons passing through the cathode filament






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






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






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






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






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






43. Surrounded by genial tubercle - hole in bone near mandibular midline - radiolucent






44. Cortical bone; J or U shaped radiopacity






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






46. 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)






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






48. Do not occur in dentistry






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






50. The measurement of electrical force that causes electrons to move from a negative pole to a positive one. Measured in volts (V) or kilovolts (kV)