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






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






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






4. Effects seen years - decades - or generations later






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






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






7. Marked prominence that appears radiopaque.






8. Coulombs per kilogram






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






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






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






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






13. 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)






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






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






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






17. Continues from ramus; radiopaque band






18. 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)






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






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






21. Sharp - thornlike projection that appears radiopaque.






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






23. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






25. 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)






26. Mature bone - muscle - nerve






27. Cortical bone - radiopaque band above maxillary incisors






28. 68 Degrees F






29. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






33. Hollow space - cavity that appears radiolucent






34. 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






35. Rounded prominence that appears radiopaque






36. Bump or nodule that appears radiopaque






37. U-shaped portion extending from ramus to ramus






38. Encases/supports teeth






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






40. Bony wall that divides 2 spaces - radiopaque






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






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






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






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






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






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






47. 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.






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






49. Sievart






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