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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. Posterior to mandibular third molar






2. Coulombs per kilogram






3. Rounded prominence that appears radiopaque






4. U-shaped portion extending from ramus to ramus






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






6. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






7. Linear prominence that appears radiopaque.






8. Continues from ramus; radiopaque band






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






10. Scooped out of depressed area of bone that appears radiolucent






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






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






13. 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






14. Encases/supports teeth






15. Bony wall that divides 2 spaces - radiopaque






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






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






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






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






20. Bump or nodule that appears radiopaque






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






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






23. 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)






24. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






27. 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






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






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






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






31. Surrounds root - cortical bone - radiopaque






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






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






34. 'Cheekbone'; cortical bone; radiopaque band extending from zygomatic process.






35. 68 Degrees F






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






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






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






39. Cortical bone - radiopaque band above maxillary incisors






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






41. 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.






42. Mature bone - muscle - nerve






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






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






45. 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)






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






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






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






49. Do not occur in dentistry






50. Marked prominence that appears radiopaque.