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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. A line of union between adjoining bones - found only in skull; appears as radiolucent line






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






3. Posterior to mandibular third molar






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






5. Sievart






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






7. Gray






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






9. 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)






10. Coulombs per kilogram






11. Removes unexposed silver halide crystals and creates white/clear areas on film; black metallic silver remains on film.






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






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






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






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






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






17. Bony wall that divides 2 spaces - radiopaque






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






19. Cortical bone - radiopaque band above maxillary incisors






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






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






22. 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)






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






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






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






26. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






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






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






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






34. Bump or nodule that appears radiopaque






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






36. Marked prominence that appears radiopaque.






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






38. Linear prominence that appears radiopaque.






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






40. Mature bone - muscle - nerve






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






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






43. Encases/supports teeth






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






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






46. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






50. 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