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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. 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.






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






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






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






7. 'Cortex'-> dense - outer layer; also called compact bone-appears radiopaque on film






8. Gray






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






10. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






14. Sharp - thornlike projection that appears radiopaque.






15. 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






16. Do not occur in dentistry






17. Linear prominence that appears radiopaque.






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






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






20. Encases/supports teeth






21. Bump or nodule that appears radiopaque






22. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






25. 68 Degrees F






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






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






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






29. Mature bone - muscle - nerve






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






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






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






33. U-shaped portion extending from ramus to ramus






34. 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)






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






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






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






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






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






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






41. 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)






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






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






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






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






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






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






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






49. Marked prominence that appears radiopaque.






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