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






2. Bony prominence posterior to maxillary third molar; radiopaque






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






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






5. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






8. Cortical bone - radiopaque band above maxillary incisors






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






10. Coulombs per kilogram






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






12. U-shaped portion extending from ramus to ramus






13. Sharp - thornlike projection that appears radiopaque.






14. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






19. Do not occur in dentistry






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






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






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






23. Mature bone - muscle - nerve






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






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






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






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






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






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






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






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






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






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






34. Linear prominence that appears radiopaque.






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






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






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






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






39. Posterior to mandibular third molar






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






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






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






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






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






45. Dental x-ray machines operating 70 kVp or below: minimum 1.5 mm aluminum filtration - Dental x-ray machines operating above 70 kVp: minimum of 2.5 mm. of aluminum filtration.






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






47. Cortical bone; J or U shaped radiopacity






48. Encases/supports teeth






49. 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






50. 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)