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






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






3. Cortical bone - radiopaque band above maxillary incisors






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






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






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






7. 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.






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






9. Do not occur in dentistry






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






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






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






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






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






15. U-shaped portion extending from ramus to ramus






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






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






18. 68 Degrees F






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






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






21. Mature bone - muscle - nerve






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






23. Sharp - thornlike projection that appears radiopaque.






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






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






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






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






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






29. 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)






30. Sievart






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






32. Continues from ramus; radiopaque band






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






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






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






37. Surrounds root - cortical bone - radiopaque






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






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






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






41. Linear prominence that appears radiopaque.






42. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






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






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






48. 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)






49. Bony wall that divides 2 spaces - radiopaque






50. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area