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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. More damage can occur in younger or rapidly dividing cells






2. 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)






3. 68 Degrees F






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






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






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






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






8. Bony prominence posterior to maxillary third molar; radiopaque






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






10. Gray






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






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






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






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






15. Posterior to mandibular third molar






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






17. Continues from ramus; radiopaque band






18. Surrounds root - cortical bone - radiopaque






19. Encases/supports teeth






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






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






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






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






24. Cortical bone - radiopaque band above maxillary incisors






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






26. Do not occur in dentistry






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






28. Mature bone - muscle - nerve






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






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






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






32. 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.






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






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






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






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






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






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






40. Sharp - thornlike projection that appears radiopaque.






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






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






43. Effects seen years - decades - or generations later






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






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






46. 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)






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






48. Sharper of dark and light areas and how they are separated on film. Low kVp results in high contrast (many white and black areas - very little gray). Useful when diagnosing decay. High kVp results in low contrast (many shades of grade) Useful for per






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






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