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






2. Hollow space - cavity that appears radiolucent






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






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






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






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






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






8. 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)






9. Coulombs per kilogram






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






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






12. Surrounds root - cortical bone - radiopaque






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






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






15. Marked prominence that appears radiopaque.






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






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






18. Mature bone - muscle - nerve






19. U-shaped portion extending from ramus to ramus






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






21. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






22. Bump or nodule that appears radiopaque






23. Sharp - thornlike projection that appears radiopaque.






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






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






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






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






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






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






30. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






33. Linear prominence that appears radiopaque.






34. Cortical bone; J or U shaped radiopacity






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






36. 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.






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






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






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






40. Sievart






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






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






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






44. Rounded prominence that appears radiopaque






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






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






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






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






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






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