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






2. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






6. Continues from ramus; radiopaque band






7. Bump or nodule that appears radiopaque






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






9. Posterior to mandibular third molar






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






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






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






13. Sievart






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






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






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






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






18. 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






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






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






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






22. Cortical bone; J or U shaped radiopacity






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






24. 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.






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






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






27. 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.






28. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






33. Coronal part of alveolar bone - between teeth - cortical bone - radiopaque






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






35. 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






36. Marked prominence that appears radiopaque.






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






38. U-shaped portion extending from ramus to ramus






39. Do not occur in dentistry






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






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






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






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






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






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






46. Surrounds root - cortical bone - radiopaque






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






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






49. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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