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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. Cortical bone - radiopaque band above maxillary incisors






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






4. Rounded prominence that appears radiopaque






5. Bump or nodule that appears radiopaque






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






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






8. Cortical bone; J or U shaped radiopacity






9. Between canine and lateral incisor - depression is not always visible - radiolucent






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






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. Sievart






13. Bony wall that divides 2 spaces - radiopaque






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






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






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






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






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






19. Marked prominence that appears radiopaque.






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






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






22. 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.






23. Bony prominence posterior to maxillary third molar; radiopaque






24. Occurs very little; most photons pass through cell with little or no damage






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






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






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






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






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






30. Do not occur in dentistry






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






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






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






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






35. Sharp - thornlike projection that appears radiopaque.






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






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






38. 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






39. 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)






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






41. Encases/supports teeth






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






43. Continues from ramus; radiopaque band






44. Gray






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. 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






47. Posterior to mandibular third molar






48. 68 Degrees F






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






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






Can you answer 50 questions in 15 minutes?



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