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Radiology 3

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






3. Sievart






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






5. Bump or nodule that appears radiopaque






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






7. Encases/supports teeth






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






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






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






11. U-shaped portion extending from ramus to ramus






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






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






14. Posterior to mandibular third molar






15. Mature bone - muscle - nerve






16. 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)






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






18. Marked prominence that appears radiopaque.






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






20. 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.






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






22. 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)






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






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






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






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






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






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






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






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






31. 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






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






33. Hollow space - cavity that appears radiolucent






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






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






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. Coulombs per kilogram






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






39. Cortical bone - radiopaque band above maxillary incisors






40. 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)






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






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






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






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






46. Gray






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






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






49. Linear prominence that appears radiopaque.






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







Sorry!:) No result found.

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