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






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






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






4. Linear prominence that appears radiopaque.






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






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






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






8. 68 Degrees F






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






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






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






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






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






14. Sharp - thornlike projection that appears radiopaque.






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






16. Can increase or decrease the number of electrons passing through the cathode filament






17. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






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






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






23. Gray






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






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






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






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






28. 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






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






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






31. Surrounds root - cortical bone - radiopaque






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






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






34. Bony prominence posterior to maxillary third molar; radiopaque






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






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






37. Hollow space - cavity that appears radiolucent






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






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






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






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






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






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






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






45. Mature bone - muscle - nerve






46. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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