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Radiology 3

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Cortical bone; J or U shaped radiopacity






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






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






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






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






6. Bony wall that divides 2 spaces - radiopaque






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






8. Gray






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






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






11. 68 Degrees F






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






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






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






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






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






17. 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)






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






19. 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






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






21. Surrounds root - cortical bone - radiopaque






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






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






24. Continues from ramus; radiopaque band






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






26. Do not occur in dentistry






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






28. Time between exposure to ionizing radiation and the appearance of observable clinical signs.






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






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






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






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






33. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






37. Bump or nodule that appears radiopaque






38. 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.






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






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






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






42. The measurement of electrical force that causes electrons to move from a negative pole to a positive one. Measured in volts (V) or kilovolts (kV)






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






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






45. U-shaped portion extending from ramus to ramus






46. Posterior to mandibular third molar






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






48. Linear prominence that appears radiopaque.






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






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






Can you answer 50 questions in 15 minutes?



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