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






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






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






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






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






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






7. 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.






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






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






10. Continues from ramus; radiopaque band






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






12. Rounded prominence that appears radiopaque






13. Reduces exposed silver halide crystals into black metallic silver a makes dark/black areas on film; unexposed silver halide crystals are unaffected by developer






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






15. Hollow space - cavity that appears radiolucent






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






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






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






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






20. Do not occur in dentistry






21. Effects seen years - decades - or generations later






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






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






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






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






26. 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






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






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






29. Encases/supports teeth






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






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






32. The x-ray photon is deflected from its path during its passage through matter






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






34. Cortical bone; J or U shaped radiopacity






35. 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.






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






37. Gray






38. 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)






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






40. Sharp - thornlike projection that appears radiopaque.






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






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






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






44. Linear prominence that appears radiopaque.






45. Mature bone - muscle - nerve






46. 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






47. Intersection of maxillary sinus and nasal cavity - radiopaque - cortical bone; above maxillary canine.






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






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






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