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






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






3. Cortical bone; J or U shaped radiopacity






4. Sharp - thornlike projection that appears radiopaque.






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






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






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






8. Gray






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






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






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






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






13. Linear prominence that appears radiopaque.






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






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






16. Mature bone - muscle - nerve






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






18. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






20. A line of union between adjoining bones - found only in skull; appears as radiolucent line






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






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






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






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






25. Marked prominence that appears radiopaque.






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






27. Continues from ramus; radiopaque band






28. 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)






29. Effects seen years - decades - or generations later






30. Surrounds root - cortical bone - radiopaque






31. Bony wall that divides 2 spaces - radiopaque






32. Coulombs per kilogram






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






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






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






36. Rounded prominence that appears radiopaque






37. 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.






38. Sievart






39. Bony prominence posterior to maxillary third molar; radiopaque






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






41. Hollow space - cavity that appears radiolucent






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






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






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






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






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






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






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






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






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