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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. 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)






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






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






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






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






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






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






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






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






11. 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.






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






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






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






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






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






17. Cortical bone; J or U shaped radiopacity






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






19. 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.






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






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






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






23. Linear prominence that appears radiopaque.






24. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






29. 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






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






31. Marked prominence that appears radiopaque.






32. Encases/supports teeth






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






34. Sharp - thornlike projection that appears radiopaque.






35. Continues from ramus; radiopaque band






36. U-shaped portion extending from ramus to ramus






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






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






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






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






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






42. Coulombs per kilogram






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






44. Mature bone - muscle - nerve






45. 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)






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






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






48. 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






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






50. Bony prominence posterior to maxillary third molar; radiopaque






Can you answer 50 questions in 15 minutes?



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