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






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






3. Continues from ramus; radiopaque band






4. Rounded prominence that appears radiopaque






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






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






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






8. 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)






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






10. Bony wall that divides 2 spaces - radiopaque






11. Posterior to mandibular third molar






12. Linear prominence that appears radiopaque.






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






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






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






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






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






18. Cortical bone - radiopaque band above maxillary incisors






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






20. 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)






21. Sharp - thornlike projection that appears radiopaque.






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






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






24. U-shaped portion extending from ramus to ramus






25. 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.






26. Coulombs per kilogram






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






28. Mature bone - muscle - nerve






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






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






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






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






33. Effects seen years - decades - or generations later






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






35. 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






36. 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






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






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






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






40. 68 Degrees F






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






42. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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. Surrounds root - cortical bone - radiopaque






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






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






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






49. Gray






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