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






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






3. 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)






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






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






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






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






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






9. Mature bone - muscle - nerve






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






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






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






13. Bump or nodule that appears radiopaque






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






15. Hollow space - cavity that appears radiolucent






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






17. Surrounds root - cortical bone - radiopaque






18. Encases/supports teeth






19. Do not occur in dentistry






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






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






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






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






24. Gray






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






26. Mostly seen in mandibular nerve/blood supply vertical radiolucent lines






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






28. Cortical bone; J or U shaped radiopacity






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






30. 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)






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






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






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






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






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






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






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






38. 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.






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






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






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






42. 68 Degrees F






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






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






45. The penetrating x-ray beam that is produced at the target of the anode






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






47. Bony wall that divides 2 spaces - radiopaque






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






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






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