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Radiology 3

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Surrounds root - cortical bone - radiopaque






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






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






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






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






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






7. Gray






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






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






10. Two small openings (radiolucent) found on floor of nasal cavity->common exit is incisive foramen






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






12. Marked prominence that appears radiopaque.






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






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






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






16. Occurs very little; most photons pass through cell with little or no damage






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






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






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






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






21. Cortical bone - radiopaque band above maxillary incisors






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






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






24. 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.






25. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






27. 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)






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






29. Posterior to mandibular third molar






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






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






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






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






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






35. 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






36. Hollow space - cavity that appears radiolucent






37. Effects seen years - decades - or generations later






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






39. U-shaped portion extending from ramus to ramus






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






41. Continues from ramus; radiopaque band






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






43. Sharp - thornlike projection that appears radiopaque.






44. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






45. Mature bone - muscle - nerve






46. Do not occur in dentistry






47. Occurs frequently due to the high concentration of water in cells.






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






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






50. Opening/hole in bone that allows the passage of blood vessels/nerves and appears radiolucent







Sorry!:) No result found.

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