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






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






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






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






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






6. Gray






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






8. 68 Degrees F






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






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






11. Cortical bone - radiopaque band above maxillary incisors






12. 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)






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






14. Sharp - thornlike projection that appears radiopaque.






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






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






17. 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)






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






19. Marked prominence that appears radiopaque.






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






21. 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






22. Cortical bone; J or U shaped radiopacity






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






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






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






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






27. Coulombs per kilogram






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






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






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






31. Located above maxillary premolar/molar teeth - border is made up of cortical bone; sinus cavity is radiolucent compartment






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






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






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






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






36. Encases/supports teeth






37. 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.






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






39. Linear prominence that appears radiopaque.






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






41. 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)






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






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






44. U-shaped portion extending from ramus to ramus






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






46. Surrounds root - cortical bone - radiopaque






47. Do not occur in dentistry






48. 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.






49. Sievart






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