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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. Located above maxillary premolar/molar teeth - border is made up of cortical bone; sinus cavity is radiolucent compartment






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






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






4. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






5. Linear prominence that appears radiopaque.






6. 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






7. Cortical bone; J or U shaped radiopacity






8. Encases/supports teeth






9. 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)






10. Effects seen years - decades - or generations later






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






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






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






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






15. Sievart






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






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






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






19. 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)






20. U-shaped portion extending from ramus to ramus






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






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






23. Rounded prominence that appears radiopaque






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






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






26. Gray






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






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






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






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






31. Marked prominence that appears radiopaque.






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






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






34. Bony prominence posterior to maxillary third molar; radiopaque






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






36. Do not occur in dentistry






37. Surrounds root - cortical bone - radiopaque






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






39. Bump or nodule that appears radiopaque






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






41. Cortical bone - radiopaque band above maxillary incisors






42. 68 Degrees F






43. Coulombs per kilogram






44. 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)






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






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






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






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






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






50. 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.