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






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






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






4. 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






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






6. Effects seen years - decades - or generations later






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






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






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






10. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






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






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






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






17. Linear prominence that appears radiopaque.






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






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






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






21. 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)






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






23. Mature bone - muscle - nerve






24. Surrounds root - cortical bone - radiopaque






25. Posterior to mandibular third molar






26. Hollow space - cavity that appears radiolucent






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






28. Marked prominence that appears radiopaque.






29. Coulombs per kilogram






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






31. Bony prominence posterior to maxillary third molar; radiopaque






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






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






34. Bump or nodule that appears radiopaque






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






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






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






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






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






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






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






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






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






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






45. 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)






46. Encases/supports teeth






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






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






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






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