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






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






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






4. 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






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






6. 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)






7. Sharp - thornlike projection that appears radiopaque.






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






9. Coulombs per kilogram






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






11. Bump or nodule that appears radiopaque






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






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






14. Depression of bone; submandibular salivary gland found here; radiolucent; below mylohyoid ridge






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






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






17. Posterior to mandibular third molar






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






19. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






21. Cortical bone; J or U shaped radiopacity






22. Primary beam passes through glass window - insulating oil - tubehead seal. 0.5 to 1.0 mm of aluminum






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






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






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






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






27. 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)






28. Encases/supports teeth






29. 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.






30. Rounded prominence that appears radiopaque






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






32. Continues from ramus; radiopaque band






33. U-shaped portion extending from ramus to ramus






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






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






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






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






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






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






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






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






42. 'hooklike' - posterior to maxillary tuberosity; extension of medial pterygoid plate of sphenoid bone; radiopaque






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






44. 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






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






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






47. Can control the current passing from the cathode to the anode.






48. Mature bone - muscle - nerve






49. 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.






50. Marked prominence that appears radiopaque.