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






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






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






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






6. Bony wall that divides 2 spaces - radiopaque






7. Cortical bone; J or U shaped radiopacity






8. U-shaped portion extending from ramus to ramus






9. 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)






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






11. Encases/supports teeth






12. Gray






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






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






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






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






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






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






19. 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)






20. Linear prominence that appears radiopaque.






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






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






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






24. 68 Degrees F






25. Hollow space - cavity that appears radiolucent






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






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






28. Sharp - thornlike projection that appears radiopaque.






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






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






31. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






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






36. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






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






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






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






44. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






45. Posterior to mandibular third molar






46. 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






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






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






49. Continues from ramus; radiopaque band






50. Effects seen years - decades - or generations later