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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. Hollow space - cavity that appears radiolucent






2. Encases/supports teeth






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






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






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






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






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






8. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






10. Bony prominence posterior to maxillary third molar; radiopaque






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






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






13. Mature bone - muscle - nerve






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






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






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






17. Marked prominence that appears radiopaque.






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






19. Cortical bone - radiopaque band above maxillary incisors






20. Linear prominence that appears radiopaque.






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






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






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






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






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






26. Primary beam passes through glass window - insulating oil - tubehead seal. 0.5 to 1.0 mm of aluminum






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






28. 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)






29. Surrounds root - cortical bone - radiopaque






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






31. More damage can occur in younger or rapidly dividing cells






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






33. Bump or nodule that appears radiopaque






34. 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






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






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






37. Rounded prominence that appears radiopaque






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






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






40. Sharp - thornlike projection that appears radiopaque.






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






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






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






44. 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)






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






46. Effects seen years - decades - or generations later






47. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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