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






2. Mature bone - muscle - nerve






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






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






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






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






7. 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)






8. Sharper of dark and light areas and how they are separated on film. Low kVp results in high contrast (many white and black areas - very little gray). Useful when diagnosing decay. High kVp results in low contrast (many shades of grade) Useful for per






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






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






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






12. Anterior ramus of mandible; attachment for muscle of mastication; superimposed around maxillary tuberosity.






13. Bony wall that divides 2 spaces - radiopaque






14. Removes unexposed silver halide crystals and creates white/clear areas on film; black metallic silver remains on film.






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






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






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






18. Rounded prominence that appears radiopaque






19. 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)






20. Linear prominence that appears radiopaque.






21. Coulombs per kilogram






22. Quantity of radiation received or total amount absorbed (more damage with tissue absorbing large quantities of radiation)






23. 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)






24. Posterior to mandibular third molar






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






26. Gray






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






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






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






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






31. Surrounds root - cortical bone - radiopaque






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






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






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






35. Continues from ramus; radiopaque band






36. Bony prominence posterior to maxillary third molar; radiopaque






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






38. Restricts size and shape of beam to lower patient exposure - Round: cone shaped beam-2.75 inches in diameter - Rectangular: Rectangular beam slightly larger than size 2 film- lowers patient exposure






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






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






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






42. Located above maxillary premolar/molar teeth - border is made up of cortical bone; sinus cavity is radiolucent compartment






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






44. 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.






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






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






47. Cortical bone - radiopaque band above maxillary incisors






48. Tube that passes through bone - contains nerve canals/blood vessels/and appears radiolucent






49. Used to increase incoming voltage to 65 -000 to 100 -000 volts used by the high-voltage circuit.






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