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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. Gray






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






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






4. Bony prominence posterior to maxillary third molar; radiopaque






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






6. Sievart






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






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






9. Linear prominence that appears radiopaque.






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






11. Mature bone - muscle - nerve






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






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






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. 68 Degrees F






16. Do not occur in dentistry






17. Effects seen years - decades - or generations later






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






19. Cortical bone; J or U shaped radiopacity






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






21. 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)






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






23. Coulombs per kilogram






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






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






26. 'Cortex'-> dense - outer layer; also called compact bone-appears radiopaque on film






27. Posterior to mandibular third molar






28. Continues from ramus; radiopaque band






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






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






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






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






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






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






35. Cortical bone - radiopaque band above maxillary incisors






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






37. Rounded prominence that appears radiopaque






38. 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.






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






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






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






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






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






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






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






46. 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)






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






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






49. Bump or nodule that appears radiopaque






50. Hollow space - cavity that appears radiolucent