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






2. Marked prominence that appears radiopaque.






3. 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






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






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






6. 68 Degrees F






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






8. Do not occur in dentistry






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






10. Continues from ramus; radiopaque band






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






12. Cortical bone; J or U shaped radiopacity






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






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






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






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






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






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






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






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. Sievart






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






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






25. Hollow space - cavity that appears radiolucent






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






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






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






29. Bony prominence posterior to maxillary third molar; radiopaque






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






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






32. Somatic effects that have a threshold; effects increase in severity with increasing absorbed dose. (Examples: Erythema - loss of hair - cataracts - and decreased fertility)






33. Bump or nodule that appears radiopaque






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






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






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






37. Encases/supports teeth






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






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






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






41. 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






42. Mature bone - muscle - nerve






43. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






44. Posterior to mandibular third molar






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






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






47. 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)






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






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






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







Sorry!:) No result found.

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